Young. Environment, Economy, and Christian Ethics. Augsburg Fortress Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रYoung. Environment, Economy, and Christian Ethics. Augsburg Fortress Publishers.
एमएलए (9वां संस्करण) प्रशस्ति पत्रYoung. Environment, Economy, and Christian Ethics. Augsburg Fortress Publishers.
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