APA (7th ed.) Citation

Ulanowicz, R. E. (2013). A world of contingencies. Zygon, 48(1), 77-92.

Chicago Style (17th ed.) Citation

Ulanowicz, Robert E. "A World of Contingencies." Zygon 48, no. 1 (2013): 77-92.

MLA (9th ed.) Citation

Ulanowicz, Robert E. "A World of Contingencies." Zygon, vol. 48, no. 1, 2013, pp. 77-92.

Warning: These citations may not always be 100% accurate.