Gaya APA

Worsdall, V. (1981). Special English for Tourism: Charters, Tours and The Package Deal (Cet.7). New York: Penerbit Collier MacMillan International.

Gaya MLA

Worsdall, Vivien. "Special English for Tourism: Charters, Tours and The Package Deal". Cet.7 New York: Penerbit Collier MacMillan International, 1981. Text.