APA (7th ed.) Citation

Encyclopaedia Britannica, I. (1978). The new encyclopaedia britannica: V.18.: Macropaedia knowledge in depth. Encyclopaedia Britannica, Inc.

Chicago Style (17th ed.) Citation

Encyclopaedia Britannica, Inc. The New Encyclopaedia Britannica: V.18.: Macropaedia Knowledge in Depth. Encyclopaedia Britannica, Inc, 1978.

MLA (8th ed.) Citation

Encyclopaedia Britannica, Inc. The New Encyclopaedia Britannica: V.18.: Macropaedia Knowledge in Depth. Encyclopaedia Britannica, Inc, 1978.

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