APA
Maritain J., Evans J. W. & Ward L. R. (1966). Challenges and renewals. Cleveland: The World Publishing Company.
Chicago
Maritain Jacques, Evans Joseph William and Ward Leo R. 1966. Challenges and renewals. Cleveland: The World Publishing Company.
Harvard
Maritain J., Evans J. W. and Ward L. R. (1966). Challenges and renewals. Cleveland: The World Publishing Company.
MLA
Maritain Jacques, Evans Joseph William and Ward Leo R. Challenges and renewals. Cleveland: The World Publishing Company. 1966.
