Dyfyniad APA
NATIONAL RESEARCH COUNCIL & INSTITUTE OF MEDICINE. (1995). METHODOLOGICAL ISSUES. EN: UNDER THE INFLUENCE. DRUGS AND THE AMERICAN WORK FORCE. NATIONAL ACADEMY PRESS.
Dyfyniad Arddull Chicago
NATIONAL RESEARCH COUNCIL and INSTITUTE OF MEDICINE. METHODOLOGICAL ISSUES. EN: UNDER THE INFLUENCE. DRUGS AND THE AMERICAN WORK FORCE. WASHINGTON (USA): NATIONAL ACADEMY PRESS, 1995.
Dyfyniad MLA
NATIONAL RESEARCH COUNCIL and INSTITUTE OF MEDICINE. METHODOLOGICAL ISSUES. EN: UNDER THE INFLUENCE. DRUGS AND THE AMERICAN WORK FORCE. NATIONAL ACADEMY PRESS, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.