APA (7th ed.) Citation
Barnhart, C. L., & Barnhart, R. K. (1994). The world book dictionary: Obs. Vol. One:, A-K, s.1-1166. Vol. Two:, L-Z, s.1167-2430. The World Book,Inc.
Chicago Style (17th ed.) Citation
Barnhart, Clarence L., and Robert K. Barnhart. The World Book Dictionary: Obs. Vol. One:, A-K, S.1-1166. Vol. Two:, L-Z, S.1167-2430. Chicago: The World Book,Inc, 1994.
MLA (9th ed.) Citation
Barnhart, Clarence L., and Robert K. Barnhart. The World Book Dictionary: Obs. Vol. One:, A-K, S.1-1166. Vol. Two:, L-Z, S.1167-2430. The World Book,Inc, 1994.
Warning: These citations may not always be 100% accurate.