APA (7th ed.) Citation
CLARK, M., & ET AL. AGE AND STAGE OF READINESS FOR SMOKING CESSATION.
Chicago Style (17th ed.) Citation
CLARK, M.A, and ET AL. AGE AND STAGE OF READINESS FOR SMOKING CESSATION.
MLA (9th ed.) Citation
CLARK, M.A, and ET AL. AGE AND STAGE OF READINESS FOR SMOKING CESSATION.
Warning: These citations may not always be 100% accurate.