Thi Du, Hoang, and Nguyen Xuan Tho. “Purchasing Power Parity Between Vietnam and United States”. International Journal for Applied Information Management 2, no. 1 (October 3, 2021): 26–33. Accessed December 18, 2025. https://www.ijaim.net.103-247-8-47.cpanel.site/journal/index.php/ijaim/article/view/24.