Engdahl, D. E. (1974). Constitutional power: Federal and state in a Nutshell. West Group.
Citazione stile Chigago Style (17a edizione)Engdahl, David E. Constitutional Power: Federal and State in a Nutshell. Saint Paul: West Group, 1974.
Citatione MLA (9a ed.)Engdahl, David E. Constitutional Power: Federal and State in a Nutshell. West Group, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.