Maro, P. A. (1978). The small-scale manufacture of soap: An economic study. Tropical Products Institute.
Čikaški stil citiranja (17. izdanje)Maro, Penelope A. The Small-scale Manufacture of Soap: An Economic Study. London: Tropical Products Institute, 1978.
MLA način citiranja (9. izdanje)Maro, Penelope A. The Small-scale Manufacture of Soap: An Economic Study. Tropical Products Institute, 1978.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.