Crockett, James Underwood
Perennials
Time-Life Books, 1972
 Buku Referensi
Thomas Hardy, poems : a case book
edited by James L. Gibson and Trevor Johnson
Macmillan, 1985
 Buku Teks SO
Thomas Hardy, poems : a case book
edited by James L. Gibson and Trevor Johnson
Macmillan, 1987
 Buku Teks SO
Seymour-Smith, Martin
Hardy
Bloomsbury, 1994
 Buku Teks SO
Budworth, Geoffrey
The complete book of knots
Chancellor Press , 1997
 Buku Referensi