APA-ийн эшлэл(7 дахь хэвлэлт)

Perrett, G. (1973). Days of Sadness Years of Triumph: The American People 1939-1945. University of Wisconsin Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Perrett, Geoffrey. Days of Sadness Years of Triumph: The American People 1939-1945. Wisconsin: University of Wisconsin Press, 1973.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Perrett, Geoffrey. Days of Sadness Years of Triumph: The American People 1939-1945. University of Wisconsin Press, 1973.