Não informado. (1975). Houston Journal of Mathematics. University of Houston, Department of Mathematics.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Houston Journal of Mathematics. Houston, Tex: University of Houston, Department of Mathematics, 1975.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Houston Journal of Mathematics. University of Houston, Department of Mathematics, 1975.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.