Paul Celan :
poems, a bilingual edition /
selected, translated and introduced by Michael Hamburger.

APA Citation

Celan, P., Hamburger, M. (1980). Paul Celan: poems, a bilingual edition. New York: Persea Books.

MLA Citation

Celan, Paul, and Michael Hamburger. Paul Celan: Poems, a Bilingual Edition. New York: Persea Books, 1980.

Warning: These citations may not always be complete (especially for serials).