Perkins, R. (1987). Looking both ways: Exploring the interface between Christianity and sociology. Baker Book House.
Citazione stile Chigago Style (17a edizione)Perkins, Richard. Looking Both Ways: Exploring the Interface Between Christianity and Sociology. Grand Rapids, Mich: Baker Book House, 1987.
Citatione MLA (8a ed.)Perkins, Richard. Looking Both Ways: Exploring the Interface Between Christianity and Sociology. Baker Book House, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.