Gaya APA

SWOKOWSKI, E, W. (1979). FUNDAMENTAL OF TRIGONOMETRY : FOURTH EDITION (ED. 4). BOSTON: PRINDLE, WEBER & SCHMIDT.

Gaya MLA

SWOKOWSKI, EARL, W.. "FUNDAMENTAL OF TRIGONOMETRY : FOURTH EDITION". ED. 4 BOSTON: PRINDLE, WEBER & SCHMIDT, 1979. Prodi S1 Pend. Matematika.