The clock struck midnight, but Maya didn't mind. She had her data, she had her experience, and most importantly, she had the citation that made it official.

The general format is: Author(s). Title . Edition number. City, State: Publisher; Year.

Cunningham et al^1^ reported that...

Cunningham FG, Leveno KJ, Dashe JS, Hoffman BL, Spong CY, Casey BM, eds. Williams Obstetrics . 26th ed. McGraw Hill; 2022. APA Style (7th Edition)

Williams Obstetrics, 26th edition is more than just a textbook—it is the authoritative voice of modern obstetric practice. When you incorporate its wisdom into your own writing, whether a case report, a systematic review, a thesis, or a clinical guideline, you owe it to your readers and to the authors to provide a flawless citation.

Cunningham, F. Gary, Kenneth J. Leveno, J. Scott Dashe, Barbara L. Hoffman, Catherine Y. Spong, and Brian M. Casey. Williams Obstetrics . 26th ed. New York: McGraw-Hill Education, 2022.

The American Psychological Association (APA), 7th edition, is widely used in nursing, public health, and behavioral sciences. While less common in clinical ob/gyn, it is standard for dissertations and interdisciplinary research.

Since the main authors are the same for all chapters, APA recommends citing the whole book. If you need to cite a reprinted or specific contribution, consult the APA 7th manual for "authored chapter in an edited book." For Williams , it is simpler to cite the whole book and use in-text references to the chapter title or page range.

was more than a textbook; it was the final boss of her residency thesis. She checked the spine—the deep teal and gold lettering promised the most current standards of maternal-fetal medicine, but to Maya, it promised a long night of formatting.