Gaya APA

Paul, R, S., Haeussler, E, F. (1978). Algebra and Trigonometry for College Students . Virginia: Reston & A Prentice-Hall Company.

Gaya MLA

Paul, Richard, S.., Haeussler, Ernest, F.. "Algebra and Trigonometry for College Students". Virginia: Reston & A Prentice-Hall Company, 1978. Text.