APA aipamena

Wagner, K., & Ark, B. v. (1996). International productivity differences: Measurement and explanations. Elsevier.

Chicago Style aipamena

Wagner, Karin, and Bart van Ark. International Productivity Differences: Measurement and Explanations. Amsterdam: Elsevier, 1996.

MLA aipamena

Wagner, Karin, and Bart van Ark. International Productivity Differences: Measurement and Explanations. Elsevier, 1996.