APA (7th ed.) Citation

Fergus, P. M. (1973). Spelling improvement: A program for self-instruction (2d ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Fergus, Patricia M. Spelling Improvement: A Program for Self-instruction. 2d ed. New York: McGraw-Hill, 1973.

MLA (9th ed.) Citation

Fergus, Patricia M. Spelling Improvement: A Program for Self-instruction. 2d ed. McGraw-Hill, 1973.