APA (7th ed.) Citation

Aller, L. H. (1969). A comparison of radio-frequency and optical studies of selected planetary nebulae. University of California.

Chicago Style (17th ed.) Citation

Aller, Lawrence Hugh. A Comparison of Radio-frequency and Optical Studies of Selected Planetary Nebulae. Los Angeles: University of California, 1969.

MLA (9th ed.) Citation

Aller, Lawrence Hugh. A Comparison of Radio-frequency and Optical Studies of Selected Planetary Nebulae. University of California, 1969.