APA (7th ed.) Citation

Gallant, R. A. (1956). Exploring the universe. Garden City Bks.

Chicago Style (17th ed.) Citation

Gallant, Roy A. Exploring the Universe. [S.l.]: Garden City Bks, 1956.

MLA (9th ed.) Citation

Gallant, Roy A. Exploring the Universe. Garden City Bks, 1956.