Evans, Jessie Campbell, author
D.C. Heath, 1942
Buku Teks
Eskilson, Stephen, author
Laurence King , 2012
Buku Teks
Gomez-Palacio, Bryony, author
Page one publishing pte ltd, 2009
Buku Referensi
Meggs, Philip B.
John Wiley & Sons, 1998
Buku Teks
Buku Teks