Cita APA (7a ed.)

Swann, D., & Tolkien, J. R. R. (1992). Bilbo's last song. Albert House Press.

Cita Chicago Style (17a ed.)

Swann, Donald, y J. R. R. Tolkien. Bilbo's Last Song. London: Albert House Press, 1992.

Cita MLA (8a ed.)

Swann, Donald, y J. R. R. Tolkien. Bilbo's Last Song. Albert House Press, 1992.