APA (7th ed.) Citation

Olsen, A. E. (2010). Active vocabulary: General and academic words (4th ed.). Longman.

Chicago Style (17th ed.) Citation

Olsen, Amy E. Active Vocabulary: General and Academic Words. 4th ed. New York: Longman, 2010.

MLA (9th ed.) Citation

Olsen, Amy E. Active Vocabulary: General and Academic Words. 4th ed. Longman, 2010.