Citazione Stile APA (7a Edizione)

(2007). Quality of labour resources. Print Group, Daniel Krzanowski.

Citazione stile Chigago Style (17a edizione)

Quality of Labour Resources. Szczecin: Print Group, Daniel Krzanowski, 2007.

Citatione MLA (9a ed.)

Quality of Labour Resources. Print Group, Daniel Krzanowski, 2007.