APA

Kreukels B. P. C., Haraldsen I. R., De Cuypere G., Richter-Appelt H., Gijs L. & Cohen-Kettenis P. T. (20121213). A European network for the investigation of gender incongruence: the ENIGI initiative. : European psychiatry : the journal of the Association of European Psychiatrists.

Chicago

Kreukels B P C, Haraldsen I R, De Cuypere G, Richter-Appelt H, Gijs L and Cohen-Kettenis P T. 20121213. A European network for the investigation of gender incongruence: the ENIGI initiative. : European psychiatry : the journal of the Association of European Psychiatrists.

Harvard

Kreukels B. P. C., Haraldsen I. R., De Cuypere G., Richter-Appelt H., Gijs L. and Cohen-Kettenis P. T. (20121213). A European network for the investigation of gender incongruence: the ENIGI initiative. : European psychiatry : the journal of the Association of European Psychiatrists.

MLA

Kreukels B P C, Haraldsen I R, De Cuypere G, Richter-Appelt H, Gijs L and Cohen-Kettenis P T. A European network for the investigation of gender incongruence: the ENIGI initiative. : European psychiatry : the journal of the Association of European Psychiatrists. 20121213.