Abbott, W. C. (1929). A bibliography of Oliver Cromwell: A list of printed materials relating to Oliver Cromwell, together with a list of portraits and caricatures. Harvard Univ. Press.
Chicago-Zitierstil (17. Ausg.)Abbott, Wilbur Cortez. A Bibliography of Oliver Cromwell: A List of Printed Materials Relating to Oliver Cromwell, Together with a List of Portraits and Caricatures. Cambridge: Harvard Univ. Press, 1929.
MLA-Zitierstil (9. Ausg.)Abbott, Wilbur Cortez. A Bibliography of Oliver Cromwell: A List of Printed Materials Relating to Oliver Cromwell, Together with a List of Portraits and Caricatures. Harvard Univ. Press, 1929.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.