Παραπομπή APA

Busemann, H., & Kelly, P. J. (1953). Projective geometry and projective metrics. Academic Press.

Παραπομπή Chicago Style

Busemann, Herbert, και Paul Joseph Kelly. Projective Geometry and Projective Metrics. New York: Academic Press, 1953.

Παραπομπή MLA

Busemann, Herbert, και Paul Joseph Kelly. Projective Geometry and Projective Metrics. Academic Press, 1953.