Aldo Leopold (2013). “Aldo Leopold: A Sand County Almanac & Other Writings on Conservation and Ecology: (Library of America #238)”, p.34, Library of America
Edward Reynolds (1838). “Israel's prayer in time of trouble: with God's gracious answer; an explication of the fourteenth chapter of Hosea, in seven sermons, preached upon days of solemn humiliation”, p.15