APA aipamena

Ryan C Amacher & Holley H Ulbrich. (1995). Economic Principles and Policies (6th.). South-Western College Publishing.

Chicago Style aipamena

Ryan C Amacher and Holley H Ulbrich. Economic Principles and Policies. 6th. Australia: South-Western College Publishing, 1995.

MLA aipamena

Ryan C Amacher and Holley H Ulbrich. Economic Principles and Policies. 6th. South-Western College Publishing, 1995.