APA-viite (7. p.)

Webber, R. E. (1982). Secular humanism: Threat and challenge. Zondervan.

Chicago-viite (17. p.)

Webber, Robert E. Secular Humanism: Threat and Challenge. Michigan: Zondervan, 1982.

MLA-viite (9. p.)

Webber, Robert E. Secular Humanism: Threat and Challenge. Zondervan, 1982.