APA (7th ed.) Citation

Herbig, G. H. (1957). Emission-Line Stars in the vicinity of messier 8, messier 20, and simeis 188. [Selbstverl.].

Chicago Style (17th ed.) Citation

Herbig, George H. Emission-Line Stars in the Vicinity of Messier 8, Messier 20, and Simeis 188. Mount Hamilton, Calif: [Selbstverl.], 1957.

MLA (9th ed.) Citation

Herbig, George H. Emission-Line Stars in the Vicinity of Messier 8, Messier 20, and Simeis 188. [Selbstverl.], 1957.