APA استشهاد

Field, O. P. (1971). The effect of an unconstitutional statute. Da Capo Press.

استشهاد بنمط شيكاغو

Field, Oliver Peter. The Effect of an Unconstitutional Statute. New York: Da Capo Press, 1971.

MLA استشهاد

Field, Oliver Peter. The Effect of an Unconstitutional Statute. Da Capo Press, 1971.