Strong, R. P. Some questions relating to virulence of micro-organisms, with particular reference to their immunizing powers [microform]. Photoduplication Service. University of the Philippines Library.
芝加哥风格引文Strong, Richard Pearson. Some Questions Relating to Virulence of Micro-organisms, with Particular Reference to Their Immunizing Powers [microform]. Quezon City: Photoduplication Service. University of the Philippines Library.
MLA引文Strong, Richard Pearson. Some Questions Relating to Virulence of Micro-organisms, with Particular Reference to Their Immunizing Powers [microform]. Photoduplication Service. University of the Philippines Library.
警告：这些引文格式不一定是100％准确.