APA (7th ed.) Citation

Gelin, A. (1963). The Key Concepts of the Old Testament. Paulist Press Deus Books.

Chicago Style (17th ed.) Citation

Gelin, Albert. The Key Concepts of the Old Testament. Paulist Press Deus Books, 1963.

MLA (8th ed.) Citation

Gelin, Albert. The Key Concepts of the Old Testament. Paulist Press Deus Books, 1963.

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