APA

Weeks A. W., Funkhouser H. G., . (1953). Plane trigonometry. New York: Van Nostrand.

Chicago

Weeks Arthur W, Funkhouser H Gray, . 1953. Plane trigonometry. New York: Van Nostrand.

Harvard

Weeks A. W., Funkhouser H. G., . (1953). Plane trigonometry. New York: Van Nostrand.

MLA

Weeks Arthur W, Funkhouser H Gray, . Plane trigonometry. New York: Van Nostrand. 1953.