Citação norma APA

Tracana, R. B., & Carvalho, G. S. d. (2010). Ecocentric emphasis in environmental education subtopics (ecosystems, pollution and use of resources) in textbooks of 14 countries.

Citação norma Chicago

Tracana, Rosa Branca, and Graça Simões de Carvalho. Ecocentric Emphasis in Environmental Education Subtopics (ecosystems, Pollution and Use of Resources) in Textbooks of 14 Countries. 2010.

Citação norma MLA

Tracana, Rosa Branca, and Graça Simões de Carvalho. Ecocentric Emphasis in Environmental Education Subtopics (ecosystems, Pollution and Use of Resources) in Textbooks of 14 Countries. 2010.

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