Lichtenstein, R. (1981). Study for "Yellow Apple" and "Yellow Apple", By Roy Lichtenstein. Artforum.
Citazione stile Chigago Style (17a edizione)Lichtenstein, Roy. "Study for "Yellow Apple" and "Yellow Apple", By Roy Lichtenstein." Artforum 1981.
Citatione MLA (8a ed.)Lichtenstein, Roy. "Study for "Yellow Apple" and "Yellow Apple", By Roy Lichtenstein." Artforum, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.