APA (7th ed.) Citation

Poppel, W. G. L., & Vieira, E. R. (1974). An atlas of galactic hydrogen. Carnegie Institution of Washington.

Chicago Style (17th ed.) Citation

Poppel, W. G. L., and Edemundo R. Vieira. An Atlas of Galactic Hydrogen. [Washington]: Carnegie Institution of Washington, 1974.

MLA (9th ed.) Citation

Poppel, W. G. L., and Edemundo R. Vieira. An Atlas of Galactic Hydrogen. Carnegie Institution of Washington, 1974.