APA (7th ed.) Citation

Maas, H. S., & Kuypers, J. A. (1975). From thirty to seventy. Jossey-Bass Pub.

Chicago Style (17th ed.) Citation

Maas, Henry S., and Joseph A. Kuypers. From Thirty to Seventy. San Francisco: Jossey-Bass Pub, 1975.

MLA (9th ed.) Citation

Maas, Henry S., and Joseph A. Kuypers. From Thirty to Seventy. Jossey-Bass Pub, 1975.