| title | media type | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|---|
| Flying Saucers Have Landed | Paperback | 978-0-86007-087-0 | 1977 | Desmond Leslie | |
| Flying Saucers Have Landed | Hardcover | 978-0-85435-180-0 | 1970 | " | |
| I dischi volanti sono atterrati | Copertina flessibile | 978-88-272-1148-9 | 1983 | " | |
| Im Innern der Raumschiffe | Taschenbuch | 978-3-929380-01-9 | 1995 | ||
| Inside the Spaceships | Paperback | 978-0-942176-01-8 | 1955 | ||
Edizioni Mediterranee · Futura Publications · G.A.F International · TBS The Book Service Ltd · TURMALIN Gütersloh