Cita APA (7a ed.)

Woolard, E. W., & Clemence, G. M. (1966). Spherical Astronomy. Academic Press.

Cita Chicago Style (17a ed.)

Woolard, Edgar W., y Gerald M. Clemence. Spherical Astronomy. New York: Academic Press, 1966.

Cita MLA (9a ed.)

Woolard, Edgar W., y Gerald M. Clemence. Spherical Astronomy. Academic Press, 1966.