Cita APA (7a ed.)

Villareal, T. A., & Fryxell, G. A. (1983). The genus actinocyclus bacillariophyceae: Frustule morphology of a sagittulus sp nov and two related species. University Texas. Department of Oceanography.

Cita Chicago Style (17a ed.)

Villareal, Tracy A., y Greta A. Fryxell. The Genus Actinocyclus Bacillariophyceae: Frustule Morphology of a Sagittulus Sp Nov and Two Related Species. Texas: University Texas. Department of Oceanography, 1983.

Cita MLA (8a ed.)

Villareal, Tracy A., y Greta A. Fryxell. The Genus Actinocyclus Bacillariophyceae: Frustule Morphology of a Sagittulus Sp Nov and Two Related Species. University Texas. Department of Oceanography, 1983.