APA引文

Hewitt, G. (1978). How to sing. EMI Music.

芝加哥风格引文

Hewitt, Graham. How to Sing. London: EMI Music, 1978.

MLA引文

Hewitt, Graham. How to Sing. EMI Music, 1978.

警告：这些引文格式不一定是100％准确.