[Eight apple gatherers in and around a tree with a pile of books in the foreground].

MLA

[Eight apple gatherers in and around a tree with a pile of books in the foreground]. [Place of publication not identified] : publisher not identified, 15--?]

APA

(1500). [Eight apple gatherers in and around a tree with a pile of books in the foreground]. [Place of publication not identified] : publisher not identified.

Chicago

[Eight apple gatherers in and around a tree with a pile of books in the foreground]. [Place of publication not identified] : publisher not identified, 15--?]