APA (7th ed.) Citation
HUMFLEET, G., & ET AL. (1999). HISTORY OF ALCOHOL OR DRUG PROBLEMS, CURRENT USE OF ALCOHOL OR MARIJUANA, AND SUCCESS IN QUITTING SMOKING.
Chicago Style (17th ed.) Citation
HUMFLEET, G., and ET AL. HISTORY OF ALCOHOL OR DRUG PROBLEMS, CURRENT USE OF ALCOHOL OR MARIJUANA, AND SUCCESS IN QUITTING SMOKING. 1999.
MLA (9th ed.) Citation
HUMFLEET, G., and ET AL. HISTORY OF ALCOHOL OR DRUG PROBLEMS, CURRENT USE OF ALCOHOL OR MARIJUANA, AND SUCCESS IN QUITTING SMOKING. 1999.
Warning: These citations may not always be 100% accurate.