Cita APA (7a ed.)
Lewis, J. P. (1969). <An> Introduction to Mathematics: For Students of Economics (2. ed.). MacMillan Press.
Cita Chicago Style (17a ed.)
Lewis, J. Parry. <An> Introduction to Mathematics: For Students of Economics. 2. ed. London: MacMillan Press, 1969.
Cita MLA (9a ed.)
Lewis, J. Parry. <An> Introduction to Mathematics: For Students of Economics. 2. ed. MacMillan Press, 1969.
Precaución: Estas citas no son 100% exactas.