Cita APA (7th ed.)
(1968). IBP Handbook: International biological programme. Blackwell.
Cita Chicago (17th ed.)
IBP Handbook: International Biological Programme. Oxford, Edinburgh: Blackwell, 1968.
Cita MLA (9th ed.)
IBP Handbook: International Biological Programme. Blackwell, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.