Nickersen, Jane Soames
The Devin-Adair Company, 1961
Buku Teks
Moore, Clement Henry
Little, Brown & Co., 1970
Buku Teks
Nizami, Moin Ahmad, author
Oxford University Press, 2017
eBooks
Nielsen, Waldemar A., author
Atheneum, 1966
Buku Teks
edited by C. Grove Haines
John Hopkins Press, 1956
Buku Teks