The J. Paul Getty Museum :
handbook of the collections.

APA Citation

J. Paul Getty Museum. (2007). The J. Paul Getty Museum: handbook of the collections. 7th ed. Los Angeles: J. Paul Getty Museum.

MLA Citation

J. Paul Getty Museum. The J. Paul Getty Museum: Handbook of the Collections. 7th ed. Los Angeles: J. Paul Getty Museum, 2007.

Warning: These citations may not always be complete (especially for serials).