Cita APA (7a ed.)

Ryding, E., & Wentz, M. (1965). The concept "cause" as used in historical explanation: Two studies. CWK Gleerup.

Cita Chicago Style (17a ed.)

Ryding, Erik, y Mary Wentz. The Concept "Cause" as Used in Historical Explanation: Two Studies. Lund: CWK Gleerup, 1965.

Cita MLA (9a ed.)

Ryding, Erik, y Mary Wentz. The Concept "Cause" as Used in Historical Explanation: Two Studies. CWK Gleerup, 1965.