Gaya APA

Worsdall, V. (1974). Special english for tourism book 1 : charters, tours and the package deal . New York: Collier Macmillan International, Inc..

Gaya MLA

Worsdall, Vivien. "Special english for tourism book 1 : charters, tours and the package deal". New York: Collier Macmillan International, Inc., 1974. BUKU.