Cita APA (7th ed.)
LOCKLEY, P. (1995). COUNSELLING HEROIN AND OTHER DRUG USERS. FREE ASSOCIATION BOOKS.
Cita Chicago (17th ed.)
LOCKLEY, P. COUNSELLING HEROIN AND OTHER DRUG USERS. Londres: FREE ASSOCIATION BOOKS, 1995.
Cita MLA (9th ed.)
LOCKLEY, P. COUNSELLING HEROIN AND OTHER DRUG USERS. FREE ASSOCIATION BOOKS, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.