Παραπομπή σε μορφή APA (7η εκδ.)

Klee, V., & Wagon, S. (1991). Old and new unsolved problems in plane geometry and number theory. Mathematical Association of america.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Klee, Victor, και S. Wagon. Old and New Unsolved Problems in Plane Geometry and Number Theory. [Washington]: Mathematical Association of america, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Klee, Victor, και S. Wagon. Old and New Unsolved Problems in Plane Geometry and Number Theory. Mathematical Association of america, 1991.