Root, D., & Irwin, J. (2000). Pennsylvania (First edition.). Fodor''s Travel Publications.
Citazione stile Chigago Style (17a edizione)Root, Douglas, e Jerry Irwin. Pennsylvania. First edition. Oakland: Fodor''s Travel Publications, 2000.
Citatione MLA (9a ed.)Root, Douglas, e Jerry Irwin. Pennsylvania. First edition. Fodor''s Travel Publications, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.