The origin of endorsement
MLA
De Roover, Raymond, and James A Henry. The Origin of Endorsement. S.l.: s.n., 1956.
APA
De Roover, R., & Henry, J. A. (1956). The origin of endorsement. S.l.: s.n.
Chicago
De Roover, Raymond, The Origin of Endorsement. Translated by James A Henry. S.l.: s.n., 1956.