Cita APA (7th ed.)

Ebbighausen, E. G. G. (1974). Introductory astronomy. Merrrill.

Cita Chicago (17th ed.)

Ebbighausen, Edwin George G. Introductory Astronomy. Columbus, Ohio: Merrrill, 1974.

Cita MLA (9th ed.)

Ebbighausen, Edwin George G. Introductory Astronomy. Merrrill, 1974.