Gaya APA

William, I, D, I, I, W., Beckenbach, E, F. (1965). **Essentials of college algebra . California: California: Wadsworth; 1965..

Gaya MLA

William, I., Drooyan,, Irving, II., Wooton,., Beckenbach, Edwin, F.. "**Essentials of college algebra". California: California: Wadsworth; 1965., 1965. Text.