Here are examples for 4 common types needed to reference books, pulled from the AJCN Style Guide info linked above:
1) Personal authors
Author A, Author B, Author C, Author D. Title. Edition. City: Publisher, date.
Shils M, Shike M, Olson J, Ross AC. Modern nutrition in health and disease. 9th ed. Baltimore: Lippincott Williams & Wilkins, 1998.
2) Committee report or corporate author
Committee or corporate author. Edition. City: Publisher, date.
National Research Council. Recommended dietary allowances. 10th ed. Washington, DC: National Academy Press, 1989.
Food and Nutrition Board, Institute of Medicine. Dietary reference intakes for vitamin C, vitamin E, selenium and carotenoids. Washington, DC: National Academy Press, 2000.
3) Chapter in a book
Author A, Author B. Title. Edition. In: Book title. City, State: Publisher, date:pages.
Young VR, Tharakan JF. Nutritional essentiality of amino acids and amino acid requirements in healthy adults. 2nd. ed. In: Cynober LA, ed. Metabolic and therapeutic aspects of amino acids in clinical nutrition. Boca Raton, FL: CRC Press, 2004:439–70.
4) Agency publication
Agency. Title. City: Publisher, date. [Name and number of bulletin]
US Department of Agriculture, US Department of Health and Human Services. Nutrition and your health: dietary guidelines for Americans. Washington, DC: US Government Printing Office, 2000.[USDA Home and Garden Bulletin no. 232.]