Marcus's writings are reflected in his authorship or co-authorship in hundreds of published medical articles, chapters and books on various aspects of sex therapy, marriage counseling, child psychiatry, family counseling, psychoanalysis and medical education, as well as ethical, socio-economic and philosophic discussions in these fields.
Marcus, Irwin M.; Francis, John J. (1979). La masturbazione [Masturbation: From infancy to senescence] (in Italian). Translated by Maura Pizzorno. Milano: Feltrinelli. OCLC450626870.
Marcus, Irwin M.; Francis, John J. (1975). Masturbation: From infancy to senescence. New York: International Universities Press. ISBN978-0823631506. LCCN73016855. OCLC1176970.
Marcus, Irwin M. (1960). An interdisciplinary approach to accident patterns in children. Lafayette, IN: Child Development Publications of the Society for Research in Child Development. LCCN60002550. OCLC1082420.
Newton, Niles (1957). Gyorgy, Paul; Marcus, Irwin M.; Montgomery, Thaddeus L. (eds.). The Family Book of Child Care. New York: Published by Harper & Row. ASINB0006AU6L2. LCCN55008058. OCLC1347503.
Marcus, Irwin M. (1956). Psychoanalytic Group Therapy with Fathers of Emotionally Disturbed Preschool Children. New Orleans: Tulane University. ASINB000K7SLIG.