Philippines. Technology and Livelihood Resource Center, Philippines. Technology and Livelihood Resource Center. Technology Correspondence Program, & Ibarra, R. M. (1990). Ang paggawa ng sabon: Isang courseware ng Technology Correspondence Program, Technology and Livelihood Resource Center. Technology and Livelihood Resource Center.
Chicago-Zitierstil (17. Ausg.)Philippines. Technology and Livelihood Resource Center, Philippines. Technology and Livelihood Resource Center. Technology Correspondence Program, und Rafael M. Ibarra. Ang Paggawa Ng Sabon: Isang Courseware Ng Technology Correspondence Program, Technology and Livelihood Resource Center. Makati City: Technology and Livelihood Resource Center, 1990.
MLA-Zitierstil (9. Ausg.)Philippines. Technology and Livelihood Resource Center, et al. Ang Paggawa Ng Sabon: Isang Courseware Ng Technology Correspondence Program, Technology and Livelihood Resource Center. Technology and Livelihood Resource Center, 1990.