Cita APA (7th ed.)

Kersting, H., & Watkins, J. (1994). Perry Roberts. Städtisches Museum Abteiberg.

Cita Chicago (17th ed.)

Kersting, Hannelore, i Jonathan Watkins. Perry Roberts. Mönchengladbach: Städtisches Museum Abteiberg, 1994.

Cita MLA (8th ed.)

Kersting, Hannelore, i Jonathan Watkins. Perry Roberts. Städtisches Museum Abteiberg, 1994.