APA (7th ed.) Citation

Cook, G. E. (1987). Merrill spelling for word mastery. Merrill.

Chicago Style (17th ed.) Citation

Cook, Gillian Elizabeth. Merrill Spelling for Word Mastery. Toronto ; Columbus, Ohio: Merrill, 1987.

MLA (9th ed.) Citation

Cook, Gillian Elizabeth. Merrill Spelling for Word Mastery. Merrill, 1987.