Παραπομπή σε μορφή APA (7η εκδ.)

Kragh, H. (1996). Cosmology and controversy: The historical development of two theories of the universe. Princeton University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kragh, Helge. Cosmology and Controversy: The Historical Development of Two Theories of the Universe. Princeton, NJ: Princeton University Press, 1996.

Παραπομπή σε μορφή MLA (8th εκδ.)

Kragh, Helge. Cosmology and Controversy: The Historical Development of Two Theories of the Universe. Princeton University Press, 1996.