誰が書いたか

who wrote it

→ 誰
phrase Rare #39,293
who wrote it Used to ask or refer to who the writer was; か marks an embedded question.
JA: この詩を誰が書いたか知っていますか。
EN: Do you know who wrote this poem?

誰が書いたかわかる?

Can you tell who wrote it?

この本を誰が書いたか知っていますか。

Do you know who wrote this book?

誰が書いたか調べる〝死せる詩人の会〟について聞かれる

Someone asks who wrote Dead Poets Society.

— いまを生きる (1989)

誰が書いたか知ってる?

Do you know who wrote it?