Cita APA (7th ed.)

Pasachoff, J. M. (1992). Journey through the universe. Saunders College Pub..

Cita Chicago (17th ed.)

Pasachoff, Jay M. Journey Through the Universe. Philadelphia: Saunders College Pub., 1992.

Cita MLA (9th ed.)

Pasachoff, Jay M. Journey Through the Universe. Saunders College Pub., 1992.

Atenció: Aquestes cites poden no estar 100% correctes.