1.
Lertwannawit A, Anuwichanont J. Tourists Expectation And Perception Towards Environmental Issue Management For Green Tourism Of Khao Yai National Park. IBER [Internet]. 2011Aug.18 [cited 2019Oct.15];10(9):41-6. Available from: https://clutejournals.com/index.php/IBER/article/view/5625