Παραπομπή σε μορφή APA (7η εκδ.)

Eckmann, J. P., Koch, H., & Wittwer, P. (1984). A computer-assisted proof of universality for area-preserving maps. American Mathematical Society.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Eckmann, Jean Pierre, Hans Koch, και Peter Wittwer. A Computer-assisted Proof of Universality for Area-preserving Maps. Providence, R.I., USA: American Mathematical Society, 1984.

Παραπομπή σε μορφή MLA (9th εκδ.)

Eckmann, Jean Pierre, et al. A Computer-assisted Proof of Universality for Area-preserving Maps. American Mathematical Society, 1984.