Krupp, M. A., & Chatton, M. J. (1977). Current Medical Diagnosis Treatment 1977.
Lua i Stíl Chicago (17ú heag.)Krupp, Marcus A., agus Milton J. Chatton. Current Medical Diagnosis Treatment 1977. 1977.
Lua MLA (9ú heag.)Krupp, Marcus A., agus Milton J. Chatton. Current Medical Diagnosis Treatment 1977. 1977.
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