Cita APA (7th ed.)

Richards, H. G. (1929). THE RESISTANCE OF THE FRESHWATER SNAIL, PHYSA HETEROSTROPHA (SAY) TO SEA WATER. Zenodo.

Cita Chicago (17th ed.)

Richards, Horace G. THE RESISTANCE OF THE FRESHWATER SNAIL, PHYSA HETEROSTROPHA (SAY) TO SEA WATER. Zenodo, 1929.

Cita MLA (9th ed.)

Richards, Horace G. THE RESISTANCE OF THE FRESHWATER SNAIL, PHYSA HETEROSTROPHA (SAY) TO SEA WATER. Zenodo, 1929.