Wilhelm, L. (1980). Balling brothers: By Lambert Wilhelm. Greenleaf Classics.
Citazione stile Chigago Style (17a edizione)Wilhelm, Lambert. Balling Brothers: By Lambert Wilhelm. San Diego, Calif: Greenleaf Classics, 1980.
Citatione MLA (8a ed.)Wilhelm, Lambert. Balling Brothers: By Lambert Wilhelm. Greenleaf Classics, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.