Cita APA (7a ed.)
Meyer, F. B. (1927). The call and challenge of the unseen. Missions of Biblical Education.
Cita Chicago Style (17a ed.)
Meyer, F. B. The Call and Challenge of the Unseen. Toronto: Missions of Biblical Education, 1927.
Cita MLA (9a ed.)
Meyer, F. B. The Call and Challenge of the Unseen. Missions of Biblical Education, 1927.
Precaución: Estas citas no son 100% exactas.