©2013 National Research Council of Thailand
Siriporn Panpanich. 2004. Guidelines for the promotion of tourist guide consciousness regarding conservation of the Inner Rattanakosin cultural environment. Field of Study Environmental Education, Mahidol University;
Siriporn Panpanich. (2004) Guidelines for the promotion of tourist guide consciousness regarding conservation of the Inner Rattanakosin cultural environment . Mahidol University/Bangkok.
Siriporn Panpanich. Guidelines for the promotion of tourist guide consciousness regarding conservation of the Inner Rattanakosin cultural environment. . Bangkok:Mahidol University, 2004.
Siriporn Panpanich. (2004) Guidelines for the promotion of tourist guide consciousness regarding conservation of the Inner Rattanakosin cultural environment . Mahidol University/Bangkok.