APA aipamena

James F Ragan & Lloyd B Thomas. (1990). Principles of Macroeconomics. Harcourt Brace Jovanovich.

Chicago Style aipamena

James F Ragan and Lloyd B Thomas. Principles of Macroeconomics. San Diego: Harcourt Brace Jovanovich, 1990.

MLA aipamena

James F Ragan and Lloyd B Thomas. Principles of Macroeconomics. Harcourt Brace Jovanovich, 1990.