APA (7th ed.) Citation

Calhoun David. (1990). Year book of science and the future 1990. Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

Calhoun David. Year Book of Science and the Future 1990. Chicago: Encyclopaedia Britannica, 1990.

MLA (9th ed.) Citation

Calhoun David. Year Book of Science and the Future 1990. Encyclopaedia Britannica, 1990.

Warning: These citations may not always be 100% accurate.