APA (7th ed.) Citation

Shangle, B. (2004). Day of tragedy: September 11, 2001 ; [ World Trade Center - the Pentagon - Flight 93] ([Memorial ed.], 3. print.). American Products Publ.

Chicago Style (17th ed.) Citation

Shangle, Barbara. Day of Tragedy: September 11, 2001 ; [ World Trade Center - the Pentagon - Flight 93]. [Memorial ed.], 3. print. Beaverton, Or: American Products Publ, 2004.

MLA (9th ed.) Citation

Shangle, Barbara. Day of Tragedy: September 11, 2001 ; [ World Trade Center - the Pentagon - Flight 93]. [Memorial ed.], 3. print. American Products Publ, 2004.