Clement, H. G. (1971). Philippine tourism: Re-examined. Philippine Government and the Philippine Chamber of Tourism.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClement, Harry G. Philippine Tourism: Re-examined. [Manila]: Philippine Government and the Philippine Chamber of Tourism, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रClement, Harry G. Philippine Tourism: Re-examined. Philippine Government and the Philippine Chamber of Tourism, 1971.
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