Cita APA (7a ed.)

Petitte, R. D. (2013). Civilization at risk: Seeds of strife. Cambridge Scholars Publishing.

Cita Chicago Style (17a ed.)

Petitte, Ron D. Civilization at Risk: Seeds of Strife. Newcastle upon Tyne, England: Cambridge Scholars Publishing, 2013.

Cita MLA (9a ed.)

Petitte, Ron D. Civilization at Risk: Seeds of Strife. Cambridge Scholars Publishing, 2013.