Sinh, N.H. 2013. Factors affecting botanic park visitation: A case of Saigon Zoo and Botanical Gardens. Ho Chi Minh City Open University Journal of Science - Economics and Business Administration. 3, 1 (Aug. 2013), 113–123. DOI:https://doi.org/10.46223/HCMCOUJS.econ.en.3.1.107.2013.