APA

Svenson H. K., . (1945). A brief review of the Galapagos flora. : .

Chicago

Svenson H K, . 1945. A brief review of the Galapagos flora. : .

Harvard

Svenson H. K., . (1945). A brief review of the Galapagos flora. : .

MLA

Svenson H K, . A brief review of the Galapagos flora. : . 1945.