Hernandez-Campoy, Juan Manuel
Wiley Blackwell, 2016
Buku Teks
Pieris, Ralph, compiler
Abhinav Publications, 1977
Buku Teks
Crochet, Treena
Prentice-Hall, 1999
Buku Teks
Matei Candea
Routledge, 2018
Buku Teks
Sheldon, Brook E.
American Library Association , 1991
Buku Teks