Cita APA (7th ed.)
Bull, C. B. B., & Soerensen, H. (1955). Values of gravity on the inland ice in North Greenland.
Cita Chicago (17th ed.)
Bull, C. B. B., i Henning Soerensen. Values of Gravity on the Inland Ice in North Greenland. 1955.
Cita MLA (9th ed.)
Bull, C. B. B., i Henning Soerensen. Values of Gravity on the Inland Ice in North Greenland. 1955.
Atenció: Aquestes cites poden no estar 100% correctes.