APA (7e ed.) Bronvermelding

STEIN, S. K., & CRABILL, C. D. (1976). Algebra II: Trigonometry. W.H.Freeman and co.

Chicago (17e ed.) Bronvermelding

STEIN, Sherman K., en Calvin D. CRABILL. Algebra II: Trigonometry. San Francisco: W.H.Freeman and co, 1976.

MLA (9e ed.) Bronvermelding

STEIN, Sherman K., en Calvin D. CRABILL. Algebra II: Trigonometry. W.H.Freeman and co, 1976.