APA استشهاد

Lerner, A. P. (1951). Economics of employment. McGraw-hill.

استشهاد بنمط شيكاغو

Lerner, Abba P. Economics of Employment. newyork: McGraw-hill, 1951.

MLA استشهاد

Lerner, Abba P. Economics of Employment. McGraw-hill, 1951.