Cita APA (7th ed.)

Graustein, W. C. (1930). Introduction to higher geometry. Macmillan.

Cita Chicago (17th ed.)

Graustein, William C. Introduction to Higher Geometry. Nueva York: Macmillan, 1930.

Cita MLA (9th ed.)

Graustein, William C. Introduction to Higher Geometry. Macmillan, 1930.