APA citiranje

Ullmann, F., & Elvers, B. (2013). Ullmann's renewable resources. Wiley-VCH.

Chicago Style (17th ed.) Citation

Ullmann, Fritz, and Barbara Elvers. Ullmann's Renewable Resources. Weinheim: Wiley-VCH, 2013.

MLA citiranje

Ullmann, Fritz, and Barbara Elvers. Ullmann's Renewable Resources. Wiley-VCH, 2013.