APA (7th ed.) Citation

Zimmermann, R. E., Aller, L. H., & Ross, J. E. (1970). The manganese star Phi Herculis. University of California.

Chicago Style (17th ed.) Citation

Zimmermann, R. E., Lawrence Hugh Aller, and J. E. Ross. The Manganese Star Phi Herculis. Los Angeles: University of California, 1970.

MLA (9th ed.) Citation

Zimmermann, R. E., et al. The Manganese Star Phi Herculis. University of California, 1970.