APA (7th ed.) Citation

Roo, W. A. v. (1971). The mystery. Gregorian University Press.

Chicago Style (17th ed.) Citation

Roo, William A. van. The Mystery. Rome: Gregorian University Press, 1971.

MLA (9th ed.) Citation

Roo, William A. van. The Mystery. Gregorian University Press, 1971.

Warning: These citations may not always be 100% accurate.