Παραπομπή σε μορφή APA (7η εκδ.)

Ritland, R. M. (1970). A Search for Meaning in Nature: Anew look at creation and evolution. Pacific Press Publishing Association.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ritland, Richard M. A Search for Meaning in Nature: Anew Look at Creation and Evolution. Montain View, Califirnia: Pacific Press Publishing Association, 1970.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ritland, Richard M. A Search for Meaning in Nature: Anew Look at Creation and Evolution. Pacific Press Publishing Association, 1970.