Philippines. Department of Tourism. Office of Tourism Information & Teehankee, R. J. (1990). Philippines. Office of Tourism Information, Deaprtment of tourism.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippines. Department of Tourism. Office of Tourism Information और Raul J. Teehankee. Philippines. Manila: Office of Tourism Information, Deaprtment of tourism, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippines. Department of Tourism. Office of Tourism Information और Raul J. Teehankee. Philippines. Office of Tourism Information, Deaprtment of tourism, 1990.
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