APA цитиране

Maturana, H. R., & Varela, F. J. (1988). The tree of knowledge: The biological roots of human understanding. Boston ; London: New Science Library.

Чикагска система за цитиране

Maturana, Humberto R., и Francisco J. Varela. The Tree of Knowledge: The Biological Roots of Human Understanding. Boston ; London: New Science Library, 1988.

MLA формат за цитиране

Maturana, Humberto R., и Francisco J. Varela. The Tree of Knowledge: The Biological Roots of Human Understanding. Boston ; London: New Science Library, 1988.

Внимание: Тези цитати може да не са 100% точни.