APA Style

HAWKES, S., WILLIAMS, P. (1993). The Greening of Tourism from Principles to Practice: a casebook of best environmental practice in tourism (1). Canada: Globe \'92.

MLA Style

HAWKES, SUZANNE., WILLIAMS, PETER. "The Greening of Tourism from Principles to Practice: a casebook of best environmental practice in tourism". 1 Canada: Globe \'92, 1993. Text.