APA

Strong A. M., Hertlein L. G., . (1939). Marine mollusks from Panama collected by the Allan Hancock expedition to the Galapagos Islands, 1931-1932. California, USA: The University of Southern California.

Chicago

Strong A M, Hertlein Leo George, . 1939. Marine mollusks from Panama collected by the Allan Hancock expedition to the Galapagos Islands, 1931-1932. California, USA: The University of Southern California.

Harvard

Strong A. M., Hertlein L. G., . (1939). Marine mollusks from Panama collected by the Allan Hancock expedition to the Galapagos Islands, 1931-1932. California, USA: The University of Southern California.

MLA

Strong A M, Hertlein Leo George, . Marine mollusks from Panama collected by the Allan Hancock expedition to the Galapagos Islands, 1931-1932. California, USA: The University of Southern California. 1939.