APA (7th ed.) Citation

Downie, N. M., & Heath, R. W. (1974). Basic statistical methods (4th ed.). National Book Store.

Chicago Style (17th ed.) Citation

Downie, Norville Morgan, and R. W. Heath. Basic Statistical Methods. 4th ed. [Manila]: National Book Store, 1974.

MLA (9th ed.) Citation

Downie, Norville Morgan, and R. W. Heath. Basic Statistical Methods. 4th ed. National Book Store, 1974.