Cita APA (7th ed.)
Oggins, R. S. (1994). Castles and Fortresses. Friedman group.
Cita Chicago (17th ed.)
Oggins, Robin S. Castles and Fortresses. New York: Friedman group, 1994.
Cita MLA (9th ed.)
Oggins, Robin S. Castles and Fortresses. Friedman group, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.