Cita APA (7a ed.)
Wright, D. F. (1987). Arithmetic for College Students (5. ed.). D.C. Heath and Co.
Cita Chicago Style (17a ed.)
Wright, D. Franklin. Arithmetic for College Students. 5. ed. Lexington: D.C. Heath and Co, 1987.
Cita MLA (9a ed.)
Wright, D. Franklin. Arithmetic for College Students. 5. ed. D.C. Heath and Co, 1987.
Precaución: Estas citas no son 100% exactas.