Dyfyniad APA

Popper, S. K. R., & Popper, K. R. S. (1966). The open society and its enemies ([5th ed. rev.].). Princeton University Press.

Dyfyniad Arddull Chicago

Popper, Sir Karl Raimund, and Karl Raimund Sir Popper. The Open Society and Its Enemies. [5th ed. rev.]. New Jersey: Princeton University Press, 1966.

Dyfyniad MLA

Popper, Sir Karl Raimund, and Karl Raimund Sir Popper. The Open Society and Its Enemies. [5th ed. rev.]. Princeton University Press, 1966.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.