APA
Cardijn J. m., . (1955). Challenge to action. Chicago: Fides Publishers.
Chicago
Cardijn Joseph monsignor, . 1955. Challenge to action. Chicago: Fides Publishers.
Harvard
Cardijn J. m., . (1955). Challenge to action. Chicago: Fides Publishers.
MLA
Cardijn Joseph monsignor, . Challenge to action. Chicago: Fides Publishers. 1955.
