Frost with Mark A. Garland ISBN:0-671-31943-4, $6.99 Paperback (August 2000) DOI:0671319434, $4.00 eBook (August 2000) Demon Blade with Mark A. Garland ISBN:0-671-87610-4, $5.99 Paperback (July 1994) DOI:0671876104, $4.00 eBook (July 1994)