Dyfyniad APA

Friedmann, W. (1971). The Future of the Oceans. Vakils, Feffer and Simons.

Dyfyniad Arddull Chicago

Friedmann, Wolfganc. The Future of the Oceans. Bombay: Vakils, Feffer and Simons, 1971.

Dyfyniad MLA

Friedmann, Wolfganc. The Future of the Oceans. Vakils, Feffer and Simons, 1971.

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