APA (7th ed.) Citation

Birke, D., Butter, M., & Köppe, T. (2011). Counterfactual thinking-- counterfactual writing. De Gruyter.

Chicago Style (17th ed.) Citation

Birke, Dorothee, Michael Butter, and Tilmann Köppe. Counterfactual Thinking-- Counterfactual Writing. Berlin ; Boston: De Gruyter, 2011.

MLA (9th ed.) Citation

Birke, Dorothee, et al. Counterfactual Thinking-- Counterfactual Writing. De Gruyter, 2011.