APA استشهاد

Naslund,Bertil. (1977). An analysis of economic size distributions. Springer - Verlag.

استشهاد بنمط شيكاغو

Naslund,Bertil. An Analysis of Economic Size Distributions. Berlin: Springer - Verlag, 1977.

MLA استشهاد

Naslund,Bertil. An Analysis of Economic Size Distributions. Springer - Verlag, 1977.