Dyfyniad APA

Pierson, R. H. (1966). The final countdown by Robert H Pierson and G S Stevenson. Pacific Press.

Dyfyniad Arddull Chicago

Pierson, Roberto H. The Final Countdown by Robert H Pierson and G S Stevenson. Pacific Press, 1966.

Dyfyniad MLA

Pierson, Roberto H. The Final Countdown by Robert H Pierson and G S Stevenson. Pacific Press, 1966.

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