Fahey et al. 2009. Fahey, Charles; Lenard, C.T.; Mills, T.M.; Milne, Lex (2009). "Calculus: A Marxist Approach"(PDF). Gazette of the Australian Mathematical Society. 36 (4): 258–266. Retrieved 6 April 2022.
Fahey et al. 2009, p. 259–260. Fahey, Charles; Lenard, C.T.; Mills, T.M.; Milne, Lex (2009). "Calculus: A Marxist Approach"(PDF). Gazette of the Australian Mathematical Society. 36 (4): 258–266. Retrieved 6 April 2022.
Fahey et al. 2009, p. 259-260. Fahey, Charles; Lenard, C.T.; Mills, T.M.; Milne, Lex (2009). "Calculus: A Marxist Approach"(PDF). Gazette of the Australian Mathematical Society. 36 (4): 258–266. Retrieved 6 April 2022.
Fahey et al. 2009, p. 261. Fahey, Charles; Lenard, C.T.; Mills, T.M.; Milne, Lex (2009). "Calculus: A Marxist Approach"(PDF). Gazette of the Australian Mathematical Society. 36 (4): 258–266. Retrieved 6 April 2022.
Fahey et al. 2009, p. 262. Fahey, Charles; Lenard, C.T.; Mills, T.M.; Milne, Lex (2009). "Calculus: A Marxist Approach"(PDF). Gazette of the Australian Mathematical Society. 36 (4): 258–266. Retrieved 6 April 2022.