註腳
C. F. and F. M. Voegelin，〈Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages〉，《中央研究院歷史語言研究所集刊》39下（1969）：369-398。
C. F. and F. M. Voegelin, “Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages,” Bulletin of the Institute of History and Philology, Academia Sinica 39.2 (1969): 369-398.
書目
Voegelin, C. F., and F. M. Voegelin
1969 〈Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages〉，《中央研究院歷史語言研究所集刊》39下：369-398。
Voegelin, C. F., and F. M. Voegelin
1969 “Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages.” Bulletin of the Institute of History and Philology, Academia Sinica 39.2: 369-398.
Voegelin, C. F., and F. M. Voegelin. (1969). Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages. 中央研究院歷史語言研究所集刊, 39(上), 369-398.
Voegelin, C. F., & F. M. Voegelin. (1969). Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages. Bulletin of the Institute of History and Philology, Academia Sinica, 39(2), 369-398.
Voegelin, C. F., and F. M. Voegelin. “Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages.” 中央研究院歷史語言研究所集刊 39, no. 下 (1969): 369-398.
Voegelin, C. F., and F. M. Voegelin. “Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages.” Bulletin of the Institute of History and Philology, Academia Sinica 39, no. 2 (1969): 369-398.
Voegelin, C. F., and F. M. Voegelin. “Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages.” 中央研究院歷史語言研究所集刊, vol. 39, no. 下, 1969, pp. 369-398.
Voegelin, C. F., and F. M. Voegelin. “Apex and Terminal Nodes in the Linquist’s Taxonomy of Genetically Related Languages.” Bulletin of the Institute of History and Philology, Academia Sinica, vol. 39, no. 2, 1969, pp. 369-398.
