Cita APA (7a ed.)
Duff, E. Social Order: March 1959. The Institute of Social Order.
Cita estilo Chicago (17a ed.)
Duff, Edward. Social Order: March 1959. Saint Louis, EUA: The Institute of Social Order.
Cita MLA (9a ed.)
Duff, Edward. Social Order: March 1959. The Institute of Social Order.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.