Handbook of marine mammals; Volume 4, river dolphins and the larger toothed whales
edited by Sam H. Ridgway and Richard J. Harrison
Academic Press, 1989
 Buku Referensi
Poems old and new: an anthology
edited by A.S. Cairncross
Macmillan, 1937
 Buku Teks
Warner, Alan
English poems and ballads : an anthology of narrative verse
Oxford University Press, 1957
 Buku Teks
Kroeber, Karl
Studying poetry : a critical anthology of English and American poems
Harper and Row, 1965
 Buku Teks
Poems of the old West : a Rocky Mountain anthology
edited by Levette Jay Davidson
University of Denver Press, 1951
 Buku Teks