Walpole, H. (1930). Fortitude. New York: The Modern Library.
Παραπομπή Chicago StyleWalpole, Hugh. Fortitude. New York: The Modern Library, 1930.
MLA引文Walpole, Hugh. Fortitude. New York: The Modern Library, 1930.
警告：這些引文格式不一定是100％准確.
APA引文