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The Publication Manual of the American Psychological Association, Seventh Edition is the official source for APA Style. The seventh edition has been thoroughly revised and updated to reflect best practices in scholarly writing and publishing.

The ninth edition of the MLA Handbook, published by the Modern Language Association, offers guidance on creating works-cited-list entries in MLA style using the template of core elements. It features advice on punctuation, grammar, inclusive language, formatting research papers, and in-text citations. Includes an appendix of sample works-cited-list entries, illustrations, and an index.

Much has happened in the years since the publication of the seventeenth edition of The Chicago Manual of Style. The world has transformed, and the Manual has risen to meet the moment. The eighteenth edition of this classic guide for writers, editors, and publishers is the most extensive revision in two decades.

Every chapter has been reexamined with diversity and accessibility in mind, and major changes include updated and expanded coverage of pronoun use and inclusive language, revised guidelines on capitalization, a broader range of examples, new coverage of Indigenous languages, and expanded advice on making publications accessible to people with disabilities. The Manual’s traditional focus on nonfiction has been expanded to include fiction and other creative genres in coverage of topics such as punctuation and dialogue, and the needs of self-published authors receive wider attention.

The citation chapters have been thoroughly reorganized for the benefit of new and experienced users alike, and the key concepts for editing mathematics have been integrated into the chapters where they will be most useful to generalists. Evolving technologies—from open-access publishing models to AI—are covered throughout. And naturally, there are some well-considered updates to familiar rules, including changes intended to align the Manual’s recommendations more closely with real-world usage.

Chapters include updated advice on finding, evaluating, and citing a wide range of digital sources and also recognize the evolving use of software for citation management, graphics, and paper format and submission. The ninth edition is fully aligned with the recently released Chicago Manual of Style, 17th edition.