Post, S. G. (2011). The hidden gifts of helping: How the power of giving, compassion, and hope can get us through hard times. Jossey-Bass.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPost, Stephen Garrard. The Hidden Gifts of Helping: How the Power of Giving, Compassion, and Hope Can Get Us Through Hard Times. San Francisco: Jossey-Bass, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPost, Stephen Garrard. The Hidden Gifts of Helping: How the Power of Giving, Compassion, and Hope Can Get Us Through Hard Times. Jossey-Bass, 2011.
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