Rugoff, R. (2000). Touched by your presence: Ralph Rugoff on invisibility in art. frieze.
Citazione stile Chigago Style (17a edizione)Rugoff, Ralph. "Touched by Your Presence: Ralph Rugoff on Invisibility in Art." Frieze 2000.
Citatione MLA (8a ed.)Rugoff, Ralph. "Touched by Your Presence: Ralph Rugoff on Invisibility in Art." Frieze, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.