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.
Cita Chicago (17th ed.)Philippines. Technology and Livelihood Resource Center, Philippines. Technology and Livelihood Resource Center. Technology Correspondence Program, i 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.
Cita MLA (9th ed.)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.