Παραπομπή APA

Salkind, C. T., & Earl, J. M. (1973). The contest problem book III: : annual High Scool contests 1966-1972. Washington: Mathematical Association of America.

Παραπομπή Chicago Style

Salkind, Charles T., and James M. Earl. The Contest Problem Book III: : Annual High Scool Contests 1966-1972. Washington: Mathematical Association of America, 1973.

Παραπομπή MLA

Salkind, Charles T., and James M. Earl. The Contest Problem Book III: : Annual High Scool Contests 1966-1972. Washington: Mathematical Association of America, 1973.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.