Lund, E., Pihl, M., & Sløk, J. (1991). De europaeiske ideers historie (20. opl.). Gyldendal.
Chicago Style (17th ed.) CitationLund, Erik, Mogens Pihl, and Johannes Sløk. De Europaeiske Ideers Historie. 20. opl. Copenhagen: Gyldendal, 1991.
MLA (9th ed.) CitationLund, Erik, et al. De Europaeiske Ideers Historie. 20. opl. Gyldendal, 1991.
Warning: These citations may not always be 100% accurate.