Dyfyniad APA

Burroughs, W. J. (2003). Weather cycles: Real or imaginary? (2nd ed.). Cambridge University.

Dyfyniad Arddull Chicago

Burroughs, William James. Weather Cycles: Real or Imaginary? 2nd ed. Cambridge: Cambridge University, 2003.

Dyfyniad MLA

Burroughs, William James. Weather Cycles: Real or Imaginary? 2nd ed. Cambridge University, 2003.

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