Leo, S. (2016). English for professional tour guiding services. Gramedia.
Chicago Style (17th ed.) CitationLeo, Sutanto. English for Professional Tour Guiding Services. Gramedia, 2016.
MLA (8th ed.) CitationLeo, Sutanto. English for Professional Tour Guiding Services. Gramedia, 2016.
Warning: These citations may not always be 100% accurate.