Cita APA (7th ed.)

Roberts, H. E. (2014). A - L. Routledge.

Cita Chicago (17th ed.)

Roberts, Helene E. A - L. New York [u.a.]: Routledge, 2014.

Cita MLA (8th ed.)

Roberts, Helene E. A - L. Routledge, 2014.