APA (7th ed.) Citation

Doña, E. L., & Ravina, M. C. V. (1993). An Investigation of the significance of listening skill in second language learning. College of Arts and Letters, University of the Philippines Diliman.

Chicago Style (17th ed.) Citation

Doña, Edna L., and Maria Clara V. Ravina. An Investigation of the Significance of Listening Skill in Second Language Learning. Quezon City: College of Arts and Letters, University of the Philippines Diliman, 1993.

MLA (9th ed.) Citation

Doña, Edna L., and Maria Clara V. Ravina. An Investigation of the Significance of Listening Skill in Second Language Learning. College of Arts and Letters, University of the Philippines Diliman, 1993.

Warning: These citations may not always be 100% accurate.