APA (7e ed.) Bronvermelding

Freilich, A., Ahanholt, H. H., & McCormack, J. p. Plane trigonometry.

Chicago (17e ed.) Bronvermelding

Freilich, Aaron, Henry H. Ahanholt, en Joseph páginas McCormack. Plane Trigonometry.

MLA (8e ed.) Bronvermelding

Freilich, Aaron, et al. Plane Trigonometry.