APA (7th ed.) Citation

(1971). Dark nebulae, globules, and protostars. University of Arizona.

Chicago Style (17th ed.) Citation

Dark Nebulae, Globules, and Protostars. Tucson, Arizona: University of Arizona, 1971.

MLA (9th ed.) Citation

Dark Nebulae, Globules, and Protostars. University of Arizona, 1971.

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