National Gallery of Art. A Treasure of Masterpieces.
芝加哥风格引文National Gallery of Art. A Treasure of Masterpieces.
MLA引文National Gallery of Art. A Treasure of Masterpieces.
警告：这些引文格式不一定是100％准确.
APA引文
National Gallery of Art. A Treasure of Masterpieces.
芝加哥风格引文National Gallery of Art. A Treasure of Masterpieces.
MLA引文National Gallery of Art. A Treasure of Masterpieces.