Cita APA (7a ed.)

Pasachoff, J. M. (1977). Contemporary astronomy. Saunders.

Cita Chicago Style (17a ed.)

Pasachoff, Jay M. Contemporary Astronomy. Philadelphia: Saunders, 1977.

Cita MLA (9a ed.)

Pasachoff, Jay M. Contemporary Astronomy. Saunders, 1977.