APA

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

Chicago

Holdren John P, Ehrlich Paul R, . 1971. Global ecology: readings toward a rational strategy for man. New York: Harcourt Brace Jovanovich.

Harvard

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

MLA

Holdren John P, Ehrlich Paul R, . Global ecology: readings toward a rational strategy for man. New York: Harcourt Brace Jovanovich. 1971.