APA استشهاد

Summer, G. W., & Peters, S. W. (1973). Basic statistics in business and economics. Wardsworth.

استشهاد بنمط شيكاغو

Summer, George W., و S. William Peters. Basic Statistics in Business and Economics. Belmont: Wardsworth, 1973.

MLA استشهاد

Summer, George W., و S. William Peters. Basic Statistics in Business and Economics. Wardsworth, 1973.