Citazione Stile APA (7a Edizione)
Muller, E. K., & Wiegman, P. G. (2009). An uncommon passage: Traveling through history on the Great Allegheny Passage Trail. University of Pittsburgh Press.
Citazione stile Chigago Style (17a edizione)
Muller, Edward K., e Paul G. Wiegman. An Uncommon Passage: Traveling Through History on the Great Allegheny Passage Trail. [Pittsburgh]: University of Pittsburgh Press, 2009.
Citatione MLA (9a ed.)
Muller, Edward K., e Paul G. Wiegman. An Uncommon Passage: Traveling Through History on the Great Allegheny Passage Trail. University of Pittsburgh Press, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.