Staddon, J. E. R., & Simmelhag, V. (1970). “Superstitious” sequences. Proceedings of the 78th Annual Convention of the American Psychological Association, 757–758.

Staddon, J. E. R., and V. Simmelhag. ““Superstitious” sequences.” Proceedings of the 78th Annual Convention of the American Psychological Association, 1970, 757–58.

Staddon JER, Simmelhag V. “Superstitious” sequences. Proceedings of the 78th Annual Convention of the American Psychological Association. 1970;757–8.

Staddon, J. E. R., and V. Simmelhag. ““Superstitious” sequences.” Proceedings of the 78th Annual Convention of the American Psychological Association, 1970, pp. 757–58.

Staddon JER, Simmelhag V. “Superstitious” sequences. Proceedings of the 78th Annual Convention of the American Psychological Association. 1970;757–758.