Mamhot, M. R., Endam, J. C., Mamhot, A. A., Banagua, E. C., & Bantug, J. S. (2015). Plane & spherical trigonomerty: A tetrahedron approach. Unlimited Books Library Services & Publishing, Inc.
Chicago-referens (17:e uppl.)Mamhot, Millard R., Joemar C. Endam, Alice A. Mamhot, Emelyn C. Banagua, och Jenette S. Bantug. Plane & Spherical Trigonomerty: A Tetrahedron Approach. Manila: Unlimited Books Library Services & Publishing, Inc, 2015.
MLA-referens (9:e uppl.)Mamhot, Millard R., et al. Plane & Spherical Trigonomerty: A Tetrahedron Approach. Unlimited Books Library Services & Publishing, Inc, 2015.
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