Lua APA (7ú heag.)
SILVERMAN, K., & ET AL. (1996). VOUCHER-BASED REINFORCEMENT OF ATTENDANCE BY UNEMPLOYED METHADONE PATIENTS IN A JOB SKILLS TRAINING PROGRAM.
Lua i Stíl Chicago (17ú heag.)
SILVERMAN, K., agus ET AL. VOUCHER-BASED REINFORCEMENT OF ATTENDANCE BY UNEMPLOYED METHADONE PATIENTS IN A JOB SKILLS TRAINING PROGRAM. 1996.
Lua MLA (9ú heag.)
SILVERMAN, K., agus ET AL. VOUCHER-BASED REINFORCEMENT OF ATTENDANCE BY UNEMPLOYED METHADONE PATIENTS IN A JOB SKILLS TRAINING PROGRAM. 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.