Citazione Stile APA (7a Edizione)
Newton, J. G. (1987). Development of sinkholes resulting from man's activities in the Eastern United States.
Citazione stile Chigago Style (17a edizione)
Newton, John G. Development of Sinkholes Resulting from Man's Activities in the Eastern United States. 1987.
Citatione MLA (9a ed.)
Newton, John G. Development of Sinkholes Resulting from Man's Activities in the Eastern United States. 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.