APA (7th ed.) Citation

Fergus. (1991). Spelling improvement: A program for self-instruction (5th ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Fergus. Spelling Improvement: A Program for Self-instruction. 5th ed. New York: McGraw-Hill, 1991.

MLA (9th ed.) Citation

Fergus. Spelling Improvement: A Program for Self-instruction. 5th ed. McGraw-Hill, 1991.

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