APA-ийн эшлэл(7 дахь хэвлэлт)

Kalsbeek, L. (1975). Contours of a christian philosophy: An introduction to Hermans Dooyeweerd's thought. Wedge Foundation.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kalsbeek, L. Contours of a Christian Philosophy: An Introduction to Hermans Dooyeweerd's Thought. Toronto: Wedge Foundation, 1975.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kalsbeek, L. Contours of a Christian Philosophy: An Introduction to Hermans Dooyeweerd's Thought. Wedge Foundation, 1975.