APA (7th ed.) Citation

Ellis, M. (1981). Introduction to soap making (Rev.). Volunteers in Technical Assistance.

Chicago Style (17th ed.) Citation

Ellis, Marietta. Introduction to Soap Making. Rev. Mount Rainier, Md.: Volunteers in Technical Assistance, 1981.

MLA (9th ed.) Citation

Ellis, Marietta. Introduction to Soap Making. Rev. Volunteers in Technical Assistance, 1981.