Clement, H. G. (1971). Philippine tourism: Re-examined. Philippine Government and the Philippine Chamber of Tourism.
Lua i Stíl Chicago (17ú heag.)Clement, Harry G. Philippine Tourism: Re-examined. [Manila]: Philippine Government and the Philippine Chamber of Tourism, 1971.
Lua MLA (9ú heag.)Clement, Harry G. Philippine Tourism: Re-examined. Philippine Government and the Philippine Chamber of Tourism, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.