Cita APA (7a ed.)

Wojahn, D. (2011). World Tree. Univ of Pittsburgh Press.

Cita Chicago Style (17a ed.)

Wojahn, David. World Tree. Pittsburgh, PA: Univ of Pittsburgh Press, 2011.

Cita MLA (8a ed.)

Wojahn, David. World Tree. Univ of Pittsburgh Press, 2011.