Cheng, C. (1977). Biological interrelations between Nephotettix impicticeps I shiahara and some resistant and susceptible rice varieties [microform]. Photoduplication Service. University of the Philippines Library.
Chicago-referens (17:e uppl.)Cheng, Ching-Huan. Biological Interrelations Between Nephotettix Impicticeps I Shiahara and Some Resistant and Susceptible Rice Varieties [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA-referens (9:e uppl.)Cheng, Ching-Huan. Biological Interrelations Between Nephotettix Impicticeps I Shiahara and Some Resistant and Susceptible Rice Varieties [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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