Roof construction manual : pitched roofs.

MLA

Schunck, Eberhard, Rainer Barthel, and Hans Jochen Oster. Roof Construction Manual : Pitched Roofs. 4th ed. Basel: Birkhäuser, 2002.

APA

Schunck, E., Barthel, R., & Oster, H. Jochen. (2002). Roof construction manual : pitched roofs. 4th ed. Basel: Birkhäuser.

Chicago

Schunck, Eberhard, Rainer Barthel, and Hans Jochen Oster. Roof Construction Manual: Pitched Roofs. 4th ed. Basel: Birkhäuser, 2002.