Torre, F. d. l., & Torre, F. d. l. (1990). Steps towards an international trip: A technical English course for students of tourism (2. edición.). México: Trillas.
Chicago Style CitationTorre, Francisco de la, and Francisco de la Torre. Steps Towards an International Trip: A Technical English Course for Students of Tourism. 2. edición. México: Trillas, 1990.
MLA CitationTorre, Francisco de la, and Francisco de la Torre. Steps Towards an International Trip: A Technical English Course for Students of Tourism. 2. edición. México: Trillas, 1990.
Warning: These citations may not always be 100% accurate.