Mackenzie, A. D. B. (1894). History of the Gazzam family: Together with a biographical sketch of the American branch of the family of De Beelen. [Reading, Pa.: Printed for private circulation by C.F. Haage].

Mackenzie, Antone De Beelen. History of the Gazzam Family: Together With a Biographical Sketch of the American Branch of the Family of De Beelen. [Reading, Pa.: Printed for private circulation by C.F. Haage], 1894.

Mackenzie, Antone De Beelen. History of the Gazzam Family: Together With a Biographical Sketch of the American Branch of the Family of De Beelen. [Reading, Pa.: Printed for private circulation by C.F. Haage], 1894.