Agar-Ellis, G. J. W. (1833). The Life of Frederic the Second: In Two Volumes (Second edition.). Longman, Rees, Orme, Brown, Green & Longman.
Citazione stile Chigago Style (17a edizione)Agar-Ellis, George James Welbore. The Life of Frederic the Second: In Two Volumes. Second edition. London: Longman, Rees, Orme, Brown, Green & Longman, 1833.
Citatione MLA (9a ed.)Agar-Ellis, George James Welbore. The Life of Frederic the Second: In Two Volumes. Second edition. Longman, Rees, Orme, Brown, Green & Longman, 1833.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.