APA

Emerson W. K., Old W. E., . (1965). New molluscan records for the Galapagos Islands. : .

Chicago

Emerson William K, Old William E, . 1965. New molluscan records for the Galapagos Islands. : .

Harvard

Emerson W. K., Old W. E., . (1965). New molluscan records for the Galapagos Islands. : .

MLA

Emerson William K, Old William E, . New molluscan records for the Galapagos Islands. : . 1965.