APA (7th ed.) Citation

Fergus, P. M. (1993). Spelling improvement: A program for self-instruction. McGraw-Hill.

Chicago Style (17th ed.) Citation

Fergus, Patricia M. Spelling Improvement: A Program for Self-instruction. New York: McGraw-Hill, 1993.

MLA (9th ed.) Citation

Fergus, Patricia M. Spelling Improvement: A Program for Self-instruction. McGraw-Hill, 1993.

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