APA Style
Ecotourism: a sustainable option?. (1994).
England:
John Wiley & Sons.
Chicago Style
Ecotourism: a sustainable option?.
.
England:
John Wiley & Sons,
1994.
Text.
MLA Style
Ecotourism: a sustainable option?.
.
England:
John Wiley & Sons,
1994.
Text.
Turabian Style
Ecotourism: a sustainable option?.
England:
John Wiley & Sons,
1994.
Print.