1. M. E. Rose,Elementary Theory of Angular Momentum, Wiley, 1957. (a. Section 19, The Wigner-Eckhart Theorem; b. Formula (6.21) in Section 6.24; c. Equation (5.19b) in Section 19; d. Tables I.2 and I.4 in Appendix I; e. Formula (III.22) in Appendix III; f. Page 154).
2. I. M. Gelfand, R. A. Minlos and Z. Ya. Shapiro,Representations of the Rotation and Lorentz Groups and their Applications, Pergamon Press, 1963. (a. Section 2.3; b. Theorems at the end of Section 4.3 together with Section 2.3; c. Equations (7), (8) and (9) in Section 3.2; d. Section 2.1; e. Section 3.1; f. Section 3.3; g. Equation (18) in Section 2.3)
3. A. Messiah,Mécanique Quantique, Volume 2, Dunod, Paris, 1960. (a. Equations (79) in Section XIII.19; b. Théoreme Fondamental in Section XX.10; c. Equation (156) in Section XX.25 together with equation (49) in Section XX.9; d. Equation (118) in Section XX.18; e. End of Section XIII.10; f. Equation (116) in Section XX.18).
4. T. Kato,Perturbation Theory for Linear Operators, Springer-Verlag, 1966. (a. Section VI.5.3; b. Section V. 5.3; c. Section V.5.4; d. Sections III.5.6 and V.3.9).
5. W. Miller, Jr.,Lie Theory and Special Functions, Academic Press, 1968.