APA ציטוט

Erskine, L. G. (1966). Protect your profit margins. AMA.

Chicago Edition Citation

Erskine, Louis Gillespie. Protect Your Profit Margins. New York: AMA, 1966.

ציטוט MLA

Erskine, Louis Gillespie. Protect Your Profit Margins. AMA, 1966.