APA-viite (7. p.)
Petrina, A. (2004). Cultural politics in fifteenth-century England: The case of Humphrey, Duke of Gloucester. Brill.
Chicago-viite (17. p.)
Petrina, Alessandra. Cultural Politics in Fifteenth-century England: The Case of Humphrey, Duke of Gloucester. Leiden, Netherlands ; Boston: Brill, 2004.
MLA-viite (9. p.)
Petrina, Alessandra. Cultural Politics in Fifteenth-century England: The Case of Humphrey, Duke of Gloucester. Brill, 2004.
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