John G. Johnson Collection (Philadelphia, Pa.). (1953). Johnson collection: Two hundred and eighty-eight reproductions : Italian, Dutch, Flemish, German, Spanish, French, English & 19th century paintings. [s.n.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)John G. Johnson Collection (Philadelphia, Pa.). Johnson Collection: Two Hundred and Eighty-eight Reproductions : Italian, Dutch, Flemish, German, Spanish, French, English & 19th Century Paintings. Philadelphia: [s.n.], 1953.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)John G. Johnson Collection (Philadelphia, Pa.). Johnson Collection: Two Hundred and Eighty-eight Reproductions : Italian, Dutch, Flemish, German, Spanish, French, English & 19th Century Paintings. [s.n.], 1953.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.