Citação norma APA

Helen Dwight Reid Educational Foundation. (1990). Perspectives on political science. Heldref Publications.

Citação norma Chicago

Helen Dwight Reid Educational Foundation. Perspectives on Political Science. Washington, D.C.: Heldref Publications, 1990.

Citação norma MLA

Helen Dwight Reid Educational Foundation. Perspectives on Political Science. Heldref Publications, 1990.

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