APA

Colony W. E., Nordlie B. E., . (1973). Liquid sulfur at Volcan Azufre, Galapagos Islands. : .

Chicago

Colony W E, Nordlie Bert E, . 1973. Liquid sulfur at Volcan Azufre, Galapagos Islands. : .

Harvard

Colony W. E., Nordlie B. E., . (1973). Liquid sulfur at Volcan Azufre, Galapagos Islands. : .

MLA

Colony W E, Nordlie Bert E, . Liquid sulfur at Volcan Azufre, Galapagos Islands. : . 1973.