"Trotsky, I. (1965). In defense of marxism: Against the petty bourgeois opposition. Merit publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Trotsky, Ieon". In Defense of Marxism: Against the Petty Bourgeois Opposition. Merit publishers, 1965.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Trotsky, Ieon". In Defense of Marxism: Against the Petty Bourgeois Opposition. Merit publishers, 1965.
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