©2013 National Research Council of Thailand
Charuwan Saengjun. 2002. Tourists' behavior to promote conservation tourism in Ko Kret, Pak Kret district, Nonthaburi provinceCharuwan Saengjun. Field of Study Environment, Mahidol University;
Charuwan Saengjun. (2002) Tourists' behavior to promote conservation tourism in Ko Kret, Pak Kret district, Nonthaburi provinceCharuwan Saengjun . Mahidol University/Bangkok.
Charuwan Saengjun. Tourists' behavior to promote conservation tourism in Ko Kret, Pak Kret district, Nonthaburi provinceCharuwan Saengjun. . Bangkok:Mahidol University, 2002.
Charuwan Saengjun. (2002) Tourists' behavior to promote conservation tourism in Ko Kret, Pak Kret district, Nonthaburi provinceCharuwan Saengjun . Mahidol University/Bangkok.