APA (7th ed.) Citation

(1969). Galaxies: Nebulae ; star clusters. Hubbard.

Chicago Style (17th ed.) Citation

Galaxies: Nebulae ; Star Clusters. Northbrook, Ill.: Hubbard, 1969.

MLA (8th ed.) Citation

Galaxies: Nebulae ; Star Clusters. Hubbard, 1969.

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