Grolier Incorporated, 1964
Buku Referensi
Marinos Themistocleous, Vincenzo Morabito, editor
Springer, 2017
Buku Teks
Rossi, Renzo, author
Macmillan, 1996
Buku Referensi
Mikhael, Ehab Mudler, author
Cambridge Scholars Publishing, 2020
Buku Teks
Longrigg, Stephen Hemsley, author
Oxford University Press , 1955
Buku Teks