APA-čujuhus (7. p.)

Boff, L. (2008). Essential care: An ethics of human nature. Baylor University Press.

Chicago-čujuhus (17. p.)

Boff, Leonardo. Essential Care: An Ethics of Human Nature. Waco, TX: Baylor University Press, 2008.

MLA-čujuhus (9. p.)

Boff, Leonardo. Essential Care: An Ethics of Human Nature. Baylor University Press, 2008.

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