Subjek: Ensiklopedia

Encyclopaedia Britannica: Ready Reference and Index - VII Montpel Piranesi

Encyclopedia Britannica Macropedia Knowledge in Depth 18 : Taylor - Utah

McGraw-Hill Encyclopedia Of Science and Technology 3: CHA CYT

Encyclopaedia Britannica: Ready Reference and Index - VI Lalo Montpar

Encyclopaedia Britannica: Ready Reference and Index - V Hermoup Lally

Encyclopaedia Britannica: Ready Reference and Index - IV Excom Hermosil

Encyclopedia Britannica Propaedia Outline of Knowledge

McGraw-Hill Encyclopedia Of Science and Technology 2: BAB-CET

Encyclopaedia Britannica: Ready Reference and Index - III Colemani Exclusi

Encyclopedia Britannica Macropedia Knowledge in Depth 19 : Utilitarianism - Zwingli