APA (7th ed.) Zitazioa

Ludwig, R. (1996). A manufacturing CEO's secret tips for improving profit. John Willey & Sons.

Chicago Style (17th ed.) Zitazioa

Ludwig, Richard. A Manufacturing CEO's Secret Tips for Improving Profit. New York: John Willey & Sons, 1996.

MLA (9th ed.) Zitazioa

Ludwig, Richard. A Manufacturing CEO's Secret Tips for Improving Profit. John Willey & Sons, 1996.