APA (7th ed.) Citation

Picasso, M., & Valentin, L. (2001). Picasso, my grandfather. Riverhead Books.

Chicago Style (17th ed.) Citation

Picasso, Marina, and Louis Valentin. Picasso, My Grandfather. New York: Riverhead Books, 2001.

MLA (8th ed.) Citation

Picasso, Marina, and Louis Valentin. Picasso, My Grandfather. Riverhead Books, 2001.