A. R. · M.A. · Mark Andrew Ritchie · Mark R
| title | media type | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|---|
| God in the Pits: Confessions of a Commodities Trader | Paperback | 978-0-9646952-2-1 (0-9646952-2-7) | 1997 |
| God in the Pits: Confessions of a Commodities Trader | Hardcover | 978-0-02-603531-6 (0-02-603531-6) | 1989 |
| Spirit of the Rainforest: A Yanomamo Shaman's Story | Paperback | 978-0-9646952-3-8 (0-9646952-3-5) | 2000 |