Paz, Octavio
Grove Press, 1961
Buku Teks
Amsterdam : Delta International Publication Foundation
Majalah, Jurnal, Buletin
Van Hoeve, 1970
Buku Teks
Agbasiere, Joseph Therese, author
London: Routledge, 2000
Buku Teks
Hughes, E.R., author
Princeton University Press, 1960
Buku Teks