APA

Bell S., Tyrvainen L., Sievanen T., Pr?bstl U. & Simpson M. (2007). Outdoor Recreation and Nature Tourism : A European Perspective. S.l: Living Reviews in Landscape Research.

Chicago

Bell S, Tyrvainen L, Sievanen T, Pr?bstl U and Simpson M. 2007. Outdoor Recreation and Nature Tourism : A European Perspective. S.l: Living Reviews in Landscape Research.

Harvard

Bell S., Tyrvainen L., Sievanen T., Pr?bstl U. and Simpson M. (2007). Outdoor Recreation and Nature Tourism : A European Perspective. S.l: Living Reviews in Landscape Research.

MLA

Bell S, Tyrvainen L, Sievanen T, Pr?bstl U and Simpson M. Outdoor Recreation and Nature Tourism : A European Perspective. S.l: Living Reviews in Landscape Research. 2007.