Não informado. (1959). Bulletin of the Operations Research Society of America. Operations Research Society of America.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Bulletin of the Operations Research Society of America. Baltimore, Md: Operations Research Society of America, 1959.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Bulletin of the Operations Research Society of America. Operations Research Society of America, 1959.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.