What is the author's style in Four Perfect Pebbles: A Holocaust Story by Lila Perl?

Four Perfect Pebbles has two authors, Lila Perl and Marion Blumenthal Lazan. Lila Perl is the major author and not a character in the book. Four Perfect Pebbles has a simple, straightforward structure. The first chapter, like many such books, starts in the middle of the story, at one of its most dramatic points, and outlines the basic themes of the book. Thus, "Four Perfect Pebbles" explains the idea of the four perfect pebbles and survival in Bergen-Belsen. From there, the remaining eight chapters are structured chronologically.