Gatchalian, J. K. B., Lee, M. M. G., & [Alampay, R. B. A. Language tourism: A strategic sector of the Philippine tourism industry.
Citazione stile Chigago Style (17a edizione)Gatchalian, Jean Kathleen B., Michelle Marie G. Lee, e Ramon Benedicto A.] [Alampay. Language Tourism: A Strategic Sector of the Philippine Tourism Industry.
Citatione MLA (9a ed.)Gatchalian, Jean Kathleen B., et al. Language Tourism: A Strategic Sector of the Philippine Tourism Industry.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.