Gaya APA

Sertillangers, A., Ryan, M. (1998). Intellectual Life, The : Its Spirit, Conditions, Methods . Washington, USA: The Catholic University of America Press.

Gaya MLA

Sertillangers, A.G.., Ryan, Mary. "Intellectual Life, The : Its Spirit, Conditions, Methods". Washington, USA: The Catholic University of America Press, 1998. Academic.