Cita APA (7th ed.)
Sanford, D., & Evans, G. (1987). I can say no: A child's book about drug abuse. Multnomah Press.
Cita Chicago (17th ed.)
Sanford, Doris, i Graci Evans. I Can Say No: A Child's Book About Drug Abuse. Portland, Or.: Multnomah Press, 1987.
Cita MLA (9th ed.)
Sanford, Doris, i Graci Evans. I Can Say No: A Child's Book About Drug Abuse. Multnomah Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.