Sánchez Salazar, M. E. (1982). Eugene O'neill's "desire under the elms" in the light of Friedrich Nietzsche's "The birth of tragedy". Escuela de Lenguas Modernas, Universidad de Costa Rica.
Lua i Stíl Chicago (17ú heag.)Sánchez Salazar, Marta Elena. Eugene O'neill's "Desire Under the Elms" in the Light of Friedrich Nietzsche's "The Birth of Tragedy". San José, Costa Rica: Escuela de Lenguas Modernas, Universidad de Costa Rica, 1982.
Lua MLA (9ú heag.)Sánchez Salazar, Marta Elena. Eugene O'neill's "Desire Under the Elms" in the Light of Friedrich Nietzsche's "The Birth of Tragedy". Escuela de Lenguas Modernas, Universidad de Costa Rica, 1982.
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