Sheaffer, L. (1969). O'Neill: Son and playwright : with photographs. J. M. Dent & Sons Limited.
Citazione stile Chigago Style (17a edizione)Sheaffer, Louis. O'Neill: Son and Playwright : With Photographs. London: J. M. Dent & Sons Limited, 1969.
Citatione MLA (8a ed.)Sheaffer, Louis. O'Neill: Son and Playwright : With Photographs. J. M. Dent & Sons Limited, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.