Gaya APA

Bella, M, G, O. (). E-book Improved Technique for Hand-Crafted Soaps and Detergents Production . Cameroun: ISF.

Gaya MLA

Bella, Martial, Gervais, Oden. "E-book Improved Technique for Hand-Crafted Soaps and Detergents Production". Cameroun: ISF, . Text.