APA-viite (7. p.)
Spykman, G. J. (1985). Spectacles: Biblical perspectives on Christian scholarship. Potchefstroom University for CHE, Dept. of Philosophy of Science.
Chicago-viite (17. p.)
Spykman, Gordon J. Spectacles: Biblical Perspectives on Christian Scholarship. Potchefstroom, South Africa: Potchefstroom University for CHE, Dept. of Philosophy of Science, 1985.
MLA-viite (9. p.)
Spykman, Gordon J. Spectacles: Biblical Perspectives on Christian Scholarship. Potchefstroom University for CHE, Dept. of Philosophy of Science, 1985.
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