Gaya APA

Sykes, S. (-1974). An introduction to christian theology today. Cet.pertama dengan titel: Christian Theology Today, 1971. . Atlanta: John Knox Press.

Gaya MLA

Sykes, Stephen.. "An introduction to christian theology today. Cet.pertama dengan titel: Christian Theology Today, 1971. ". Atlanta: John Knox Press, -1974. Buku.