Sherman, A. R. (1913). Carolinian Avifauna in Northeastern Iowa. Zenodo.
Cita Chicago (17th ed.)Sherman, Althea R. Carolinian Avifauna in Northeastern Iowa. Zenodo, 1913.
Cita MLA (9th ed.)Sherman, Althea R. Carolinian Avifauna in Northeastern Iowa. Zenodo, 1913.
Atenció: Aquestes cites poden no estar 100% correctes.