Harris, P., Vardaxis, N., & Nagy, S. (Eds.). (2010). Mosby's dictionary of medicine, nursing & health professions (2nd ed.). Mosby.
Surname, A. B., Surname, C. D., & Surname E. F. (Ed./Eds.) (year of publication). Title of work (edition if 2nd or later). Publisher.
Hornwort. (2009). In Macquarie dictionary (5th ed., p. 809). Macquarie Dictionary Publishers.
Dictionary entry if applicable. (year of publication) In Title of work (edition, p. for single page or pp. for multiple pages). Publisher.
Note: For a dictionary, include title of the entry in plain font before title of the reference work in italics.
Harris et al. (2010) describe ...
... as the main function of the liver system (Harris et al., 2010).
The Macquarie dictionary defines hornwort as “any plant of the genus Ceratophyllum, comprising aquatic herbs common in ponds” (“Hornwort,” 2009, p. 809).