Cita APA (7th ed.)
Keller, H., & Silverman, R. (2010). How I would help the world. Swedenborg Foundation Press.
Cita Chicago (17th ed.)
Keller, Helen, i Ray Silverman. How I Would Help the World. West Chester, Pa.: Swedenborg Foundation Press, 2010.
Cita MLA (9th ed.)
Keller, Helen, i Ray Silverman. How I Would Help the World. Swedenborg Foundation Press, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.