APA (7th ed.) Citation

Fergus, P. M. (1983). Spelling improvement: A program for self-instruction (4th ed.). McGraw-Hill Book Co..

Chicago Style (17th ed.) Citation

Fergus, Patricia M. Spelling Improvement: A Program for Self-instruction. 4th ed. New York: McGraw-Hill Book Co., 1983.

MLA (8th ed.) Citation

Fergus, Patricia M. Spelling Improvement: A Program for Self-instruction. 4th ed. McGraw-Hill Book Co., 1983.