Citação norma APA

Rivera-Gutierrez, H. F., Pinxten, R., & Eens, M. (2011). Difficulties when Assessing Birdsong Learning Programmes under Field Conditions: A Re-Evaluation of Song Repertoire Flexibility in the Great Tit. Public Library of Science.

Citação norma Chicago

Rivera-Gutierrez, Hector F., Rianne Pinxten, and Marcel Eens. Difficulties When Assessing Birdsong Learning Programmes Under Field Conditions: A Re-Evaluation of Song Repertoire Flexibility in the Great Tit. Public Library of Science, 2011.

Citação norma MLA

Rivera-Gutierrez, Hector F., Rianne Pinxten, and Marcel Eens. Difficulties When Assessing Birdsong Learning Programmes Under Field Conditions: A Re-Evaluation of Song Repertoire Flexibility in the Great Tit. Public Library of Science, 2011.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.