Mao Zedong Quotes about Attitude
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Zedong Mao, Michael Y. M. Kau, John K. Leung (1992). “The Writings of Mao Zedong, 1949-1976: January 1956-December 1957”, p.558, M.E. Sharpe
Zedong Mao (1972). “Quotations from Chairman Mao Tsetung”, p.198, China Books
Mao Zedong (2017). “Quotations from Chairman Mao Tse-tung (The Little Red Book) & Other Works”, p.140, Lulu.com
"On the Correct Handling of Contradictions Among the People" by Mao Zedong, June 1957.