APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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