APA引文

Heaney, S. (1990). Selected poems: 1966-1987. Noonday.

芝加哥风格引文

Heaney, Seamus. Selected Poems: 1966-1987. New York: Noonday, 1990.

MLA引文

Heaney, Seamus. Selected Poems: 1966-1987. Noonday, 1990.

警告：这些引文格式不一定是100％准确.