APA (7th ed.) Citation

Cook, G. E. (1987). Merrill spelling for word mastery: Level 5. Merrill.

Chicago Style (17th ed.) Citation

Cook, Gillian E. Merrill Spelling for Word Mastery: Level 5. Toronto: Merrill, 1987.

MLA (9th ed.) Citation

Cook, Gillian E. Merrill Spelling for Word Mastery: Level 5. Merrill, 1987.