Kelly, Gregory Maxwell (2005). “Basic concepts of enriched category theory”. 《Reprints in Theory and Applications of Categories》 (영어) 1982년판 재판 (No. 10 (2005)): 1~136. MR2177301. Zbl1086.18001.
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Kelly, Gregory Maxwell (1964년 12월). “On MacLane’s conditions for coherence of natural associativities, commutativities, etc.”. 《Journal of Algebra》 (영어) 1 (4): 397–402. doi:10.1016/0021-8693(64)90018-3. ISSN0021-8693.
Kelly, Gregory Maxwell (2005). “Basic concepts of enriched category theory”. 《Reprints in Theory and Applications of Categories》 (영어) 1982년판 재판 (No. 10 (2005)): 1~136. MR2177301. Zbl1086.18001.