Trapeznikov, S. P. (1972). At the turning points of history: Some lessons of the struggle against revisionism within the Marxist-Leninist movement. Progress Publishers.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিTrapeznikov, S. P. At the Turning Points of History: Some Lessons of the Struggle Against Revisionism Within the Marxist-Leninist Movement. Moscow: Progress Publishers, 1972.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিTrapeznikov, S. P. At the Turning Points of History: Some Lessons of the Struggle Against Revisionism Within the Marxist-Leninist Movement. Progress Publishers, 1972.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.