APA (7th ed.) Citation

Robinson, J. G., & Fortnum, P. (2002). When Marnie was there; illustrated by Peggy Fortnum. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Robinson, Joan G., and Peggy Fortnum. When Marnie Was There; Illustrated by Peggy Fortnum. London: HarperCollins Publishers, 2002.

MLA (9th ed.) Citation

Robinson, Joan G., and Peggy Fortnum. When Marnie Was There; Illustrated by Peggy Fortnum. HarperCollins Publishers, 2002.