Dyfyniad APA

Holdren, J. P. (1971). Global ecology readings toward a rational strategy for man. New York: Harcourt Brace Jovanovich, Inc.

Dyfyniad Arddull Chicago

Holdren, John P. Global Ecology Readings Toward a Rational Strategy for Man. New York: Harcourt Brace Jovanovich, Inc, 1971.

Dyfyniad MLA

Holdren, John P. Global Ecology Readings Toward a Rational Strategy for Man. New York: Harcourt Brace Jovanovich, Inc, 1971.

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