Cita APA (7a ed.)

Hillson, C. J. (1977). Seaweeds: A Color-Coded, Illustrated Guide to Common Marine Plants of the East Coast of the United States. Pennsylvania State University Press.

Cita Chicago Style (17a ed.)

Hillson, Charles James. Seaweeds: A Color-Coded, Illustrated Guide to Common Marine Plants of the East Coast of the United States. University Park: Pennsylvania State University Press, 1977.

Cita MLA (8a ed.)

Hillson, Charles James. Seaweeds: A Color-Coded, Illustrated Guide to Common Marine Plants of the East Coast of the United States. Pennsylvania State University Press, 1977.