APA

HARTMAN O., . (1956). Polychaetous annelids erected by treadwell, 1891 to 1948, together with a brief chronology. New York: [s.n.].

Chicago

HARTMAN Olga, . 1956. Polychaetous annelids erected by treadwell, 1891 to 1948, together with a brief chronology. New York: [s.n.].

Harvard

HARTMAN O., . (1956). Polychaetous annelids erected by treadwell, 1891 to 1948, together with a brief chronology. New York: [s.n.].

MLA

HARTMAN Olga, . Polychaetous annelids erected by treadwell, 1891 to 1948, together with a brief chronology. New York: [s.n.]. 1956.