Hague, D. C. (1971). Pricing in business. Allen and Unwin.
Chicago Style (17. basım) AtıfHague, Douglas Chalmers. Pricing in Business. London: Allen and Unwin, 1971.
MLA (9th ed.) AtıfHague, Douglas Chalmers. Pricing in Business. Allen and Unwin, 1971.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..