Gaya APA

STEINBACH, R, C., Bellairs, D, W. (1971). TRIGONOMETRY: DEVELOPMENT AND USE . Collier-Macmillan Limited,Lond: Glencoe.

Gaya MLA

STEINBACH, Robert, C.., Bellairs, Donald, W.. "TRIGONOMETRY: DEVELOPMENT AND USE". Collier-Macmillan Limited,Lond: Glencoe, 1971. Textbook.