APA Style

Britannica, . (1981). The New Encyclopedia Britannica (Ready Reference and Index) ,Micropedia, Vol 1-10 (15 th Edition). U.S.A: Encylopedi Briannica Inc.

MLA Style

Britannica, . "The New Encyclopedia Britannica (Ready Reference and Index) ,Micropedia, Vol 1-10". 15 th Edition U.S.A: Encylopedi Briannica Inc, 1981. Art Original.