APA-referens (7:e uppl.)

Gatchalian, J. K. B., Lee, M. M. G., & [Alampay, R. B. A. Language tourism: A strategic sector of the Philippine tourism industry.

Chicago-referens (17:e uppl.)

Gatchalian, Jean Kathleen B., Michelle Marie G. Lee, och Ramon Benedicto A.] [Alampay. Language Tourism: A Strategic Sector of the Philippine Tourism Industry.

MLA-referens (9:e uppl.)

Gatchalian, Jean Kathleen B., et al. Language Tourism: A Strategic Sector of the Philippine Tourism Industry.