Παραπομπή APA

Pickett, R. R., Ketchum, M. D., & Ralph R. pickett. (1954). Investment principles and policy. Harpper& brothers.

Παραπομπή Chicago Style

Pickett, Ralph R., Marshall D. Ketchum, και Ralph R. pickett. Investment Principles and Policy. New York: Harpper& brothers, 1954.

Παραπομπή MLA

Pickett, Ralph R., et al. Investment Principles and Policy. Harpper& brothers, 1954.