Coss, M. (2013). Natural soap: Techniques and recipes for beautiful handcrafted soaps, lotions, and balms. Plain Sight Publishing.
Chicago-referens (17:e uppl.)Coss, Melinda. Natural Soap: Techniques and Recipes for Beautiful Handcrafted Soaps, Lotions, and Balms. Springville, Utah: Plain Sight Publishing, 2013.
MLA-referens (8:e uppl.)Coss, Melinda. Natural Soap: Techniques and Recipes for Beautiful Handcrafted Soaps, Lotions, and Balms. Plain Sight Publishing, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.