APA-ийн эшлэл(7 дахь хэвлэлт)

Caldwell, L. K. (1972). In defense of earth: International protection of the biosphere. Indiana University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Caldwell, Lynton K. In Defense of Earth: International Protection of the Biosphere. London: Indiana University Press, 1972.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Caldwell, Lynton K. In Defense of Earth: International Protection of the Biosphere. Indiana University Press, 1972.