Cita APA (7th ed.)
Poulsen, V. (1964). Contribution to the Lower and Middle Cambrian paleontology and stratigraphy of Northwest Greenland: With 10 Fig. in the text and 4 pl. Reitzel.
Cita Chicago (17th ed.)
Poulsen, Valdemar. Contribution to the Lower and Middle Cambrian Paleontology and Stratigraphy of Northwest Greenland: With 10 Fig. in the Text and 4 Pl. København: Reitzel, 1964.
Cita MLA (9th ed.)
Poulsen, Valdemar. Contribution to the Lower and Middle Cambrian Paleontology and Stratigraphy of Northwest Greenland: With 10 Fig. in the Text and 4 Pl. Reitzel, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.