(1963). Index to volums 1 to 23 : Atlas, index to atlas : Lists of contributors: Index to volums 1 to 23 : Atlas, index to atlas : Lists of contributors : a new survey of universal knowledge (30th ed.). Chicago [etc.]: Encyclopaedia Britannica.
Chicago stil citiranjaIndex to volums 1 to 23 : Atlas, index to atlas : Lists of contributors: Index to volums 1 to 23 : Atlas, index to atlas : Lists of contributors : a new survey of universal knowledge. 30th ed. Chicago [etc.]: Encyclopaedia Britannica, 1963.
MLA stil citiranjaIndex to volums 1 to 23 : Atlas, index to atlas : Lists of contributors: Index to volums 1 to 23 : Atlas, index to atlas : Lists of contributors : a new survey of universal knowledge. 30th ed. Chicago [etc.]: Encyclopaedia Britannica, 1963.