The genesis of a painting :
Picasso's Guernica /
by Rudolf Arnheim.

APA Citation

Arnheim, R. (19731962). The genesis of a painting: Picasso's Guernica. 1st paperback ed., with a few minor corr. Berkeley: University of California Press.

MLA Citation

Arnheim, Rudolf. The Genesis of a Painting: Picasso's Guernica. 1st paperback ed., with a few minor corr. Berkeley: University of California Press, 19731962.

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