Cita APA (7th ed.)
Sanford, D., & Evans, G. (1987). I know the world's worst secret: A child's book about living with an alcoholic parent. Multnomah Press.
Cita Chicago (17th ed.)
Sanford, Doris, i Graci Evans. I Know the World's Worst Secret: A Child's Book About Living with an Alcoholic Parent. Portland, Or.: Multnomah Press, 1987.
Cita MLA (9th ed.)
Sanford, Doris, i Graci Evans. I Know the World's Worst Secret: A Child's Book About Living with an Alcoholic Parent. Multnomah Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.