The Oxford dictionary of quotations,

Eitemau Tebyg

• The new Penguin dictionary of quotations /
  gan: Cohen, J. M. (John Michael), 1903-1989
  Cyhoeddwyd: (1993)
• Familiar quotations; a collection of passages, phrases, and proverbs traced to their sources in ancient and modern literature,
  gan: Bartlett, John, 1820-1905
  Cyhoeddwyd: (1968)
• The Penguin dictionary of twentieth-century quotations /
  gan: Cohen, J. M. (John Michael), 1903-1989
  Cyhoeddwyd: (1993)
• The Reader's digest treasury of modern quotations /
  Cyhoeddwyd: (1975)
• Canadian quotations and phrases, literary and historical /
  gan: Hamilton, Robert M. (Robert Morris), 1912-
  Cyhoeddwyd: (1952)