Heffner, J. E., & Byock, I. (2002). Palliative and end-of-life pearls. Hanley & Belfus.
Lua i Stíl Chicago (17ú heag.)Heffner, John E., agus Ira Byock. Palliative and End-of-life Pearls. Philadelphia, PA: Hanley & Belfus, 2002.
Lua MLA (9ú heag.)Heffner, John E., agus Ira Byock. Palliative and End-of-life Pearls. Hanley & Belfus, 2002.
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