Clark, S., & Riddell, J. (1988). Two study guides on Lenin's writings: Class forces and strategy in the Russian Revolution (1902-1917) ; Soviet power and the Communist International (1918-1919). New York: Pathfinder.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Clark, Steve, و John Riddell. Two Study Guides on Lenin's Writings: Class Forces and Strategy in the Russian Revolution (1902-1917) ; Soviet Power and the Communist International (1918-1919). New York: Pathfinder, 1988.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Clark, Steve, و John Riddell. Two Study Guides on Lenin's Writings: Class Forces and Strategy in the Russian Revolution (1902-1917) ; Soviet Power and the Communist International (1918-1919). New York: Pathfinder, 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.