APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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