Παραπομπή σε μορφή APA (7η εκδ.)

omar, a. (1986). on the transportation problem with mixed constraints. the institute of national planning.

Παραπομπή σε μορφή Chicago (17η εκδ.)

omar, amani. On the Transportation Problem with Mixed Constraints. cairo: the institute of national planning, 1986.

Παραπομπή σε μορφή MLA (9th εκδ.)

omar, amani. On the Transportation Problem with Mixed Constraints. the institute of national planning, 1986.