Gaya APA
LEO, Sutanto. (2016).
English for professional tour guiding services .
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
LEO, Sutanto.
English for professional tour guiding services.
Jakarta:
Gramedia Pustaka Utama,
2016.
Monograf.
Gaya MLA
LEO, Sutanto.
English for professional tour guiding services.
Jakarta:
Gramedia Pustaka Utama,
2016.
Monograf.
Gaya Turabian
LEO, Sutanto.
English for professional tour guiding services.
Jakarta:
Gramedia Pustaka Utama,
2016.
Monograf.