- (1972) The Geometry of Iterated Loop Spaces – May [pdf]
- (1973) Homotopy Invariant Algebraic Structures on Topological Spaces – Boardman, Vogt
- (1981) Une théorie combinatoire des séries formelles – Joyal [link]
- (1989) The Relation between Burnside Rings and Combinatorial Species – Labelle, Yeh [link]
- (1990) Generatingfunctionology – Wilf [link]
- (1997) Combinatorial Species and Tree-like Structures – Bergeron, Leroux, Labelle [first three chapters]
- (1997) Higher Dimensional Algebra III: n-Categories and the Algebra of Opetopes – Baez, Dolan [arXiv]
- (2002) From Finite Sets to Feynman Diagrams – Baez, Dolan [arXiv]
- (2002) Operads in Algebra, Topology, and Physics – Markl, Schnider, Stasheff
- (2003) Higher Operads, Higher Categories – Leinster [arXiv]
- (2010) Monoidal Functors, Species, and Hopf Algebras – Aguiar, Mahajan [pdf]
- (2012) Algebra + Homotopy = Operad – Vallette [arXiv]
- (2012) Algebraic Operads – Loday, Vallette [link]
- (2014) Combinatorial Species and Labelled Structures (thesis) – Yorgey [pdf]
- (2015) Set Operads in Combinatorics and Computer Science- Méndez
- (2017) Homotopy of Operads & Grothendieck-Teichmüller Groups – Fresse [link]
- (2017) Operads in Algebraic Combinatorics – Giraudo [arXiv]
Joe Moeller 