Παραπομπή APA

National productivity council. (1962). Sugar industry in Phillipines, Hawai, USA and Purto Rico. National productivity council.

Παραπομπή Chicago Style

National productivity council. Sugar Industry in Phillipines, Hawai, USA and Purto Rico. Delhi: National productivity council, 1962.

Παραπομπή MLA

National productivity council. Sugar Industry in Phillipines, Hawai, USA and Purto Rico. National productivity council, 1962.