Dyfyniad APA

Ahbe, S., Weihofen, S., & Wellge, S. (2020). The Ecological Scarcity Method for the European Union. 1st ed. 2018. Springer Fachmedien Wiesbaden.

Dyfyniad Arddull Chicago

Ahbe, Stephan, Simon Weihofen, và Steffen Wellge. The Ecological Scarcity Method for the European Union. 1st Ed. 2018. Springer Fachmedien Wiesbaden, 2020.

Dyfyniad MLA

Ahbe, Stephan, Simon Weihofen, và Steffen Wellge. The Ecological Scarcity Method for the European Union. 1st Ed. 2018. Springer Fachmedien Wiesbaden, 2020.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.