Dyfyniad APA

Andreasen, G. (1963). In twenty years: Our common future. Popular Prakashan.

Dyfyniad Arddull Chicago

Andreasen, Gunnar. In Twenty Years: Our Common Future. Bombay: Popular Prakashan, 1963.

Dyfyniad MLA

Andreasen, Gunnar. In Twenty Years: Our Common Future. Popular Prakashan, 1963.

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