Sotto, V. (1976). Una rapida vuelta al mundo, notas al vuelo [microform]. Photoduplication Service, University of the Philippines Library.
芝加哥风格引文Sotto, Vicente. Una Rapida Vuelta Al Mundo, Notas Al Vuelo [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1976.
MLA引文Sotto, Vicente. Una Rapida Vuelta Al Mundo, Notas Al Vuelo [microform]. Photoduplication Service, University of the Philippines Library, 1976.
警告：这些引文格式不一定是100％准确.