Cita APA

Hartmann, W. K. (1978). Astronomy: The cosmic journey (2nd ed.). Wadsworth.

Citación estilo Chicago

Hartmann, William K. Astronomy: The Cosmic Journey. 2nd ed. Belmont, Calif: Wadsworth, 1978.

Cita MLA

Hartmann, William K. Astronomy: The Cosmic Journey. 2nd ed. Wadsworth, 1978.

Warning: These citations may not always be 100% accurate.