Gaya APA

Eckholm, Erik P.. (1976). Losing Ground; Environmental Stress and World Food Prospects (Cet. 10). NEW YORK-LONDON.: NORTON PROFESSIONAL BOOK.

Gaya Chicago

Eckholm, Erik P.. Losing Ground; Environmental Stress and World Food Prospects. Cet. 10 NEW YORK-LONDON.: NORTON PROFESSIONAL BOOK, 1976. Text.

Gaya MLA

Eckholm, Erik P.. Losing Ground; Environmental Stress and World Food Prospects. Cet. 10 NEW YORK-LONDON.: NORTON PROFESSIONAL BOOK, 1976. Text.

Gaya Turabian

Eckholm, Erik P.. Losing Ground; Environmental Stress and World Food Prospects. Cet. 10 NEW YORK-LONDON.: NORTON PROFESSIONAL BOOK, 1976. Print.