Graef, O. d. (1993). Serenity in Crisis: A preface to Paul de Man, 1939 - 1960. Univ. of Nebraska Press.
Lua i Stíl Chicago (17ú heag.)Graef, Ortwin de. Serenity in Crisis: A Preface to Paul De Man, 1939 - 1960. Lincoln ; London: Univ. of Nebraska Press, 1993.
Lua MLA (8ú heag.)Graef, Ortwin de. Serenity in Crisis: A Preface to Paul De Man, 1939 - 1960. Univ. of Nebraska Press, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.