APA引文

Beethoven, L. v. (1993). Symphony no.6, F major, op.68. s.n.].

芝加哥风格引文

Beethoven, Ludwig van. Symphony No.6, F Major, Op.68. [S.l: s.n.], 1993.

MLA引文

Beethoven, Ludwig van. Symphony No.6, F Major, Op.68. s.n.], 1993.

警告：这些引文格式不一定是100％准确.