In the paper "Third-Order Perturbative Approach to Gravitational Instability: Evolution of Isolated Structures and Environmental Effects" by L. J. Goicoechea and J. Buitrago (ApJ, 483, 541 [1997]), there is a typographical error in equations (4), (5), (8), and (21). In these equations, the volume integrals must include both numerator and denominator.