APA استشهاد

Kelly, W. G., & Peterson, A. C. (2009). Difference equations: An introduction with applications (2nd. ed.). Academic Press.

استشهاد بنمط شيكاغو

Kelly, Walter G., و Allan C. Peterson. Difference Equations: An Introduction with Applications. 2nd. ed. U.S.A.: Academic Press, 2009.

MLA استشهاد

Kelly, Walter G., و Allan C. Peterson. Difference Equations: An Introduction with Applications. 2nd. ed. Academic Press, 2009.