APA Format
Hawkins, Donald E; Lindberg, Kreg; Hawkins, Donald E. (1993).
Ecotourism : a guide for planners and managers / edited by Kreg lindberg and Donald E. Hawkins
. North Bennington, Vermont :: The Ecotourism Society,.
MLA Format
Hawkins, Donald E; Lindberg, Kreg; Hawkins, Donald E.
Ecotourism : a guide for planners and managers / edited by Kreg lindberg and Donald E. Hawkins
. North Bennington, Vermont :: The Ecotourism Society,, 1993
Chicago Format
Hawkins, Donald E; Lindberg, Kreg; Hawkins, Donald E. Ecotourism : a guide for planners and managers / edited by Kreg lindberg and Donald E. Hawkins. North Bennington, Vermont :: The Ecotourism Society,, 1993.