Alien

From Author Wars - https://authorwars.com/books/alien-910019.html

Overview:

Title: Alien
Author: George H. Leonard
Year: 1977
Type: Novels

Variant Titles:

1981. Alien Quest

Editions/Publications:

Unknown. Alien (Unknown, George H. Leonard, Playboy Paperbacks, ISBN-10: 0872167461, $2.25, 251 pages, Paperback, Novel)
Unknown. Alien (Unknown, George H. Leonard, Playboy Press, ISBN-10: 0872163784, $1.75, 251 pages, Paperback, Novel)