Παραπομπή APA

Dougall, H. E. (1973). Investments (9th ed.). Prentice-Hall of India.

Παραπομπή Chicago Style

Dougall, Herbert Edward. Investments. 9th ed. NEw Jersey: Prentice-Hall of India, 1973.

Παραπομπή MLA

Dougall, Herbert Edward. Investments. 9th ed. Prentice-Hall of India, 1973.