"A Gollancz eBook."
The reproductive system. Originally published: London : Gollancz, 1968
The Muller-Fokker effect. Originally published: London : Hutchinson, 1970
Tik-tok. Originally published: London : Gollancz, 1983.
SF Gateway omnibus : The reproductive System, The Muller-Fokker effect, Tik-tok by John Thomas Sladek. ISBN 9781473201927. Published by Gateway in 2014. Publication and catalogue information, links to buy online and reader comments.