"Time's Arrow" author (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">time's arrow author</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for amis that I've seen before include "Author Kingsley or Martin" , "Kingsley, Martin or John" , "Author of Lucky Jim, d.1995" , "Kingsley -, English author (Lucky Jim)" , "Martin --, Eng. author" .)