(1985). Yearbook of science and the future 1986. Encyclopaedia Britannica.
Cita Chicago Style (17a ed.)Yearbook of Science and the Future 1986. Chicago [etc.]: Encyclopaedia Britannica, 1985.
Cita MLA (9a ed.)Yearbook of Science and the Future 1986. Encyclopaedia Britannica, 1985.
Precaución: Estas citas no son 100% exactas.