Não informado. (1969). Journal of Undergraduate Mathematics. Guilford College, Department of Mathematics.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of Undergraduate Mathematics. Greensboro, NC: Guilford College, Department of Mathematics, 1969.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of Undergraduate Mathematics. Guilford College, Department of Mathematics, 1969.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.