Medina, I. R., & Medina, M. R. (2002). May tainga ang lupa ... espionage in the Philippines (1896-1902) and other essays. UST Publishing House.
Chicago-viite (17. p.)Medina, Isagani R., ja Mirana R. Medina. May Tainga Ang Lupa ... Espionage in the Philippines (1896-1902) and Other Essays. Manila: UST Publishing House, 2002.
MLA-viite (9. p.)Medina, Isagani R., ja Mirana R. Medina. May Tainga Ang Lupa ... Espionage in the Philippines (1896-1902) and Other Essays. UST Publishing House, 2002.
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