Manuel Gausa, Vicente Guallart, Willy Muller, Federico Soriano, Fernando Porras, Jose Morales
ACTAR, 2003
Buku Referensi
Detroit, MI Book Tower 1960,
Buku Teks
Dewan Bahasa dan Pustaka Brunei, 2000
Buku Referensi
edited by Arthur Cotterell
Oxford Oxford University Press , 1980
Buku Teks
Elena G Popkova, Victoria N Ostrovskaya, editor
Springer, 2019
Buku Teks