Παραπομπή APA

Sandy, R. (1989). Statistics for business and economics. Mc Graw-Hill Publishing Company.

Παραπομπή Chicago Style

Sandy, Robert. Statistics for Business and Economics. New York: Mc Graw-Hill Publishing Company, 1989.

Παραπομπή MLA

Sandy, Robert. Statistics for Business and Economics. Mc Graw-Hill Publishing Company, 1989.