APA

Gudger E. W., . (1927). The whale shark, Rhineodon typus, at the Galapagos Islands. : .

Chicago

Gudger E W, . 1927. The whale shark, Rhineodon typus, at the Galapagos Islands. : .

Harvard

Gudger E. W., . (1927). The whale shark, Rhineodon typus, at the Galapagos Islands. : .

MLA

Gudger E W, . The whale shark, Rhineodon typus, at the Galapagos Islands. : . 1927.