Triangle

From Author Wars - https://authorwars.com/publications/triangle-293879.html

Overview:

Title: Triangle
Author: Sondra Marshak, Myrna Culbreath
Year: 1983
ISBN-10: 0671833995
Publisher: Timescape / Pocket Books
Price: C$2.95
Pages: 188
Binding: Paperback
Type: Novel
Title Reference: Triangle
Notes:
• "First Timescape Books printing March, 1983" • First printing by number line 10—1 • The artist is not credited, no visible signature • Artist credit from the Gregg edition • Printed in Canada though the barcode block retains the US price