The estate.

MLA

Singer, Isaac Bashevis, Gotham Book Mart Collection (University of Pennsylvania) and The Library of Chaim Potok (University of Pennsylvania). The estate. New York : Farrar, Straus and Giroux, [1969]

APA

Singer, I., Gotham Book Mart Collection (University of Pennsylvania) & The Library of Chaim Potok (University of Pennsylvania). (1969). The estate. New York : Farrar, Straus and Giroux.

Chicago

Singer, Isaac Bashevis, Gotham Book Mart Collection (University of Pennsylvania) and The Library of Chaim Potok (University of Pennsylvania). The estate. New York : Farrar, Straus and Giroux, [1969]