Pfister,Robert E & Tierney,Patrick. Recreation,Event & tourism business. Huaman Kinetics.
Citazione stile Chigago Style (17a edizione)Pfister,Robert E & Tierney,Patrick. Recreation,Event & Tourism Business. Champaign: Huaman Kinetics.
Citatione MLA (9a ed.)Pfister,Robert E & Tierney,Patrick. Recreation,Event & Tourism Business. Huaman Kinetics.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.