APA (7th ed.) Citation

Downing, D. C. (1992). NTC's spell it right dictionary. National Textbook Co.

Chicago Style (17th ed.) Citation

Downing, David C. NTC's Spell It Right Dictionary. Lincolnwood, Ill: National Textbook Co, 1992.

MLA (9th ed.) Citation

Downing, David C. NTC's Spell It Right Dictionary. National Textbook Co, 1992.