Παραπομπή σε μορφή APA (7η εκδ.)

Co, I. K. D., & Tamayo, J. P. D. (2012). Application of the importance-performance model in determining male and female tour guides service quality. UP Asian Institute of Tourism.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Co, Ira Keziah D., και Joyce Patricia D. Tamayo. Application of the Importance-performance Model in Determining Male and Female Tour Guides Service Quality. Quezon City: UP Asian Institute of Tourism, 2012.

Παραπομπή σε μορφή MLA (9th εκδ.)

Co, Ira Keziah D., και Joyce Patricia D. Tamayo. Application of the Importance-performance Model in Determining Male and Female Tour Guides Service Quality. UP Asian Institute of Tourism, 2012.