APA-viite (7. p.)

Maas, H. S., & Kuypers, J. A. (1974). From thirty to seventy. Jossey-Bass.

Chicago-viite (17. p.)

Maas, Henry S., ja Joseph A. Kuypers. From Thirty to Seventy. San Francisco: Jossey-Bass, 1974.

MLA-viite (9. p.)

Maas, Henry S., ja Joseph A. Kuypers. From Thirty to Seventy. Jossey-Bass, 1974.