APA (7th ed.) Citation

Yun, C. (1989). Pre- and post-knowledge of results intervals and motor performance of mentally retarded individuals. [publisher not identified].

Chicago Style (17th ed.) Citation

Yun, Chi-Hong. Pre- and Post-knowledge of Results Intervals and Motor Performance of Mentally Retarded Individuals. [Place of publication not identified]: [publisher not identified], 1989.

MLA (9th ed.) Citation

Yun, Chi-Hong. Pre- and Post-knowledge of Results Intervals and Motor Performance of Mentally Retarded Individuals. [publisher not identified], 1989.