Citação norma APA

(2016). Grassland ecosystems / by Melissa Higgins ; content consultant, Sara G. Baer, Professor, Department of Plant Biology, Southern Illinois University.

Citação norma Chicago

Grassland Ecosystems / by Melissa Higgins ; Content Consultant, Sara G. Baer, Professor, Department of Plant Biology, Southern Illinois University. 2016.

Citação norma MLA

Grassland Ecosystems / by Melissa Higgins ; Content Consultant, Sara G. Baer, Professor, Department of Plant Biology, Southern Illinois University. 2016.

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