Ahbe, S., Weihofen, S., & Wellge, S. (2020). The Ecological Scarcity Method for the European Union. 1st ed. 2018. Springer Fachmedien Wiesbaden.
Trích dẫn kiểu ChicagoAhbe, Stephan, Simon Weihofen, và Steffen Wellge. The Ecological Scarcity Method for the European Union. 1st Ed. 2018. Springer Fachmedien Wiesbaden, 2020.
MLA引文Ahbe, Stephan, Simon Weihofen, và Steffen Wellge. The Ecological Scarcity Method for the European Union. 1st Ed. 2018. Springer Fachmedien Wiesbaden, 2020.
警告:这些引文格式不一定是100%准确.