Não informado. (1958). Mathematics Notes from Washington State University. Washington State University.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Mathematics Notes from Washington State University. Washington: Washington State University, 1958.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Mathematics Notes from Washington State University. Washington State University, 1958.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.