Cita APA (7a ed.)

Darwin, C. (2009). The Origin of Species: A Variorum Text. Bridge-Logos.

Cita Chicago Style (17a ed.)

Darwin, Charles. The Origin of Species: A Variorum Text. Alachua, FL: Bridge-Logos, 2009.

Cita MLA (8a ed.)

Darwin, Charles. The Origin of Species: A Variorum Text. Bridge-Logos, 2009.