Verb system of present- day American English /

Eitemau Tebyg

• American english /
  gan: Marckwardt, Albert H.
  Cyhoeddwyd: (1960)
• Words and ways of American english /
  gan: Pyles, Thomas
  Cyhoeddwyd: (1952)
• Representative American plays from 1767 to the present day /
  gan: Quinn, Arthur Hobson .
  Cyhoeddwyd: (1953)
• Present-day english syntax
  gan: Scheurweghs, G
• American English in its cultural setting /
  gan: Lloyd, Donald J.
  Cyhoeddwyd: (1956)