APA استشهاد

Sufrin, S. C., & Sedgwick, R. C. (1956). Labour economics and problems at mid-century. Alfred A Knopf.

استشهاد بنمط شيكاغو

Sufrin, Sidney C., و Robert C. Sedgwick. Labour Economics and Problems at Mid-century. New Yourk: Alfred A Knopf, 1956.

MLA استشهاد

Sufrin, Sidney C., و Robert C. Sedgwick. Labour Economics and Problems at Mid-century. Alfred A Knopf, 1956.