Styl cytowania APA

Steffen, . W. (2002). Challenges of a changing earth: Proceedings of the global change open science conference, Amsterdam, July 2001. Springer.

Styl cytowania Chicago

Steffen, Will. Challenges of a Changing Earth: Proceedings of the Global Change Open Science Conference, Amsterdam, July 2001. Berlin: Springer, 2002.

Styl cytowania MLA

Steffen, Will. Challenges of a Changing Earth: Proceedings of the Global Change Open Science Conference, Amsterdam, July 2001. Springer, 2002.