Hidden forms : seeing and understanding things.

MLA

Clivio, Franco, Hans Hansen, and Pierre Mendell. Hidden Forms : Seeing and Understanding Things. Basel: Birkhäuser, 2009.

APA

Clivio, F., Hansen, H., & Mendell, P. (2009). Hidden forms : seeing and understanding things. Basel: Birkhäuser.

Chicago

Clivio, Franco, Hans Hansen, and Pierre Mendell. Hidden Forms: Seeing and Understanding Things. Basel: Birkhäuser, 2009.