Bagayas, N. A. L., Bulan, S. A. M., Molina, P. O., & Pandan, M. A. T. (1993). Production of barium ferrite magnets from steel mill scales. College of Engineering.
Lua i Stíl Chicago (17ú heag.)Bagayas, Nathalie Ann L., Stephanie Ann M. Bulan, Patricia O. Molina, agus Mary Ann T. Pandan. Production of Barium Ferrite Magnets from Steel Mill Scales. Quezon City: College of Engineering, 1993.
Lua MLA (9ú heag.)Bagayas, Nathalie Ann L., et al. Production of Barium Ferrite Magnets from Steel Mill Scales. College of Engineering, 1993.
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