APA (7th ed.) Citation

Downie, M. (1999). Your Turn: Student's book 1 (1a. ed.). Richmond Publishing.

Chicago Style (17th ed.) Citation

Downie, Michael. Your Turn: Student's Book 1. 1a. ed. Buenos Aires: Richmond Publishing, 1999.

MLA (9th ed.) Citation

Downie, Michael. Your Turn: Student's Book 1. 1a. ed. Richmond Publishing, 1999.