de Graaf, L. B. (1991). Bibliographical Resources in History: A Review and Commentary on Their Place in the Discipline.
Chicago-Zitierstil (17. Ausg.)de Graaf, Lawrence B. Bibliographical Resources in History: A Review and Commentary on Their Place in the Discipline. 1991.
MLA-Zitierstil (9. Ausg.)de Graaf, Lawrence B. Bibliographical Resources in History: A Review and Commentary on Their Place in the Discipline. 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.