Collector's Guide Publishing, Inc. · epubli
| title | ISBN-13 (ISBN-10) | year of publication | |
|---|---|---|---|
| Spaceships: A Reference Guide to International Reusable Launch Vehicle Concepts from 1944 to the Present | 978-1-894959-50-6 (1-894959-50-7) | 2007 | |
| Textbook of Space Tourism | 978-3-7375-5754-2 (3-7375-5754-3) | 2015 |
A.G. · R. A. · Robert A. · Robert G. · Robert Goehlich