Fil, P. W. (1975). American & British genealogy & heraldy: A selected list of books. American Library Association.
Citazione stile Chigago Style (17a edizione)Fil, P William. American & British Genealogy & Heraldy: A Selected List of Books. Chicago: American Library Association, 1975.
Citatione MLA (9a ed.)Fil, P William. American & British Genealogy & Heraldy: A Selected List of Books. American Library Association, 1975.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.