Tan, V. A., & Perez, F. (1957). Plane and spherical trigonometry (revised edition, engineering edition.). Macaraig Publishing Co.
Čikaški stil citiranja (17. izdanje)Tan, Vidal A., i Francisco Perez. Plane and Spherical Trigonometry. revised edition, engineering edition. Manila: Macaraig Publishing Co, 1957.
MLA način citiranja (9. izdanje)Tan, Vidal A., i Francisco Perez. Plane and Spherical Trigonometry. revised edition, engineering edition. Macaraig Publishing Co, 1957.
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