APA (7th ed.) Citation

(1989). Yearbook of science and the future 1990. Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

Yearbook of Science and the Future 1990. Chicago [etc.]: Encyclopaedia Britannica, 1989.

MLA (9th ed.) Citation

Yearbook of Science and the Future 1990. Encyclopaedia Britannica, 1989.

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