Gutierrez, P. (1984). History and life: The world and its people (2nd edition.). Scott, Foresman.
Citazione stile Chigago Style (17a edizione)Gutierrez, Patricia. History and Life: The World and Its People. 2nd edition. Glenview, Ill. [u.a.]: Scott, Foresman, 1984.
Citatione MLA (9a ed.)Gutierrez, Patricia. History and Life: The World and Its People. 2nd edition. Scott, Foresman, 1984.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.