APA(7版)引用形式

Day, D., & Ellsberg, R. (1983). By little and by little: The selected writings of Dorothy Day. Knopf.

Chicagoスタイル(17版)引用形式

Day, Dorothy, , Robert Ellsberg. By Little and by Little: The Selected Writings of Dorothy Day. New York: Knopf, 1983.

MLA(8版)引用形式

Day, Dorothy, , Robert Ellsberg. By Little and by Little: The Selected Writings of Dorothy Day. Knopf, 1983.