APA (7th ed.) Citation

(2010). Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip". Project Gutenberg.

Chicago Style (17th ed.) Citation

Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip". Project Gutenberg, 2010.

MLA (9th ed.) Citation

Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip". Project Gutenberg, 2010.

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