John G. Johnson Collection (Philadelphia, Pa.). (1948). A picture book of some Italian, Flemish, Dutch, German, Spanish, French paintings from the John G. Johnson Collection. [s.n.].
Chicago-referens (17:e uppl.)John G. Johnson Collection (Philadelphia, Pa.). A Picture Book of Some Italian, Flemish, Dutch, German, Spanish, French Paintings from the John G. Johnson Collection. Philadelphia: [s.n.], 1948.
MLA-referens (8:e uppl.)John G. Johnson Collection (Philadelphia, Pa.). A Picture Book of Some Italian, Flemish, Dutch, German, Spanish, French Paintings from the John G. Johnson Collection. [s.n.], 1948.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.