Roy, A. K. (1975). The Spring thunder and after: A survey of the "MAOIST" and "ULTRA-LEFTIST" movements in India: 1962-75. Minerva Associates (Pubs.).
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিRoy, Asish Kumar. The Spring Thunder and After: A Survey of the "MAOIST" and "ULTRA-LEFTIST" Movements in India: 1962-75. Minerva Associates (Pubs.), 1975.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিRoy, Asish Kumar. The Spring Thunder and After: A Survey of the "MAOIST" and "ULTRA-LEFTIST" Movements in India: 1962-75. Minerva Associates (Pubs.), 1975.
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