Dyfyniad APA

Engel, H., & Rapson, R. (2007). Structure systems. Hatje Cantz Verlag.

Dyfyniad Arddull Chicago

Engel, Heino, and Ralph Rapson. Structure Systems. Ostfildern: Hatje Cantz Verlag, 2007.

Dyfyniad MLA

Engel, Heino, and Ralph Rapson. Structure Systems. Hatje Cantz Verlag, 2007.

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