APA (7th ed.) Citation

Hagan, S. F. (1982). Which is which?: A manual of homophones (1.publ.). Petersen-Macmillan.

Chicago Style (17th ed.) Citation

Hagan, S. F. Which Is Which?: A Manual of Homophones. 1.publ. Hamburg: Petersen-Macmillan, 1982.

MLA (9th ed.) Citation

Hagan, S. F. Which Is Which?: A Manual of Homophones. 1.publ. Petersen-Macmillan, 1982.

Warning: These citations may not always be 100% accurate.