Παραπομπή σε μορφή APA (7η εκδ.)

Olson, D. R. (1994). The world on paper: The conceptual and cognitive implications of writing and reading. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Olson, David R. The World on Paper: The Conceptual and Cognitive Implications of Writing and Reading. Gambridge: Cambridge University Press, 1994.

Παραπομπή σε μορφή MLA (8th εκδ.)

Olson, David R. The World on Paper: The Conceptual and Cognitive Implications of Writing and Reading. Cambridge University Press, 1994.