Cita APA (7a ed.)

Kelly, T., & Mackay, J. (1937). Heroes of early times (Junior series.). Chambers.

Cita Chicago Style (17a ed.)

Kelly, Thomas, y John Mackay. Heroes of Early Times. Junior series. Edinburgh London: Chambers, 1937.

Cita MLA (9a ed.)

Kelly, Thomas, y John Mackay. Heroes of Early Times. Junior series. Chambers, 1937.