Yang, Z., & Zhang, Y. (1981). Tu di xing zheng ji guan zu zhi gai jin zhi yan jiu (Chu ban.). Cheng wen chu ban she you xian gong si.
Chicago Style aipamenaYang, Zuxian, and Yuanxu Zhang. Tu Di Xing Zheng Ji Guan Zu Zhi Gai Jin Zhi Yan Jiu. Chu ban. Taibei Shi: Cheng wen chu ban she you xian gong si, 1981.
MLA aipamenaYang, Zuxian, and Yuanxu Zhang. Tu Di Xing Zheng Ji Guan Zu Zhi Gai Jin Zhi Yan Jiu. Chu ban. Cheng wen chu ban she you xian gong si, 1981.
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