https://dispora.pekanbaru.go.id/ https://iran.unhabitat.org/ https://labkes.pekanbaru.go.id/ https://phki.untan.ac.id/ https://feb.untan.ac.id/ https://heylink.me/jagungbetslot88uangasli/

Gaya APA

Hafsah, M, J. (2002). Bisnis gula di Indonesia . Jakarta: PT. Pustaka Sinar Harapan.

Gaya MLA

Hafsah, Mohammad, Jafar. "Bisnis gula di Indonesia". Jakarta: PT. Pustaka Sinar Harapan, 2002. UMUM.