J. F. · James F. · James F. Fixx
| title | ISBN-13 | year of publication |
|---|---|---|
| Games for the Super-Intelligent | 978-0-7607-4743-8 | 1972 |
| Jim Fixx's Second Book of Running | 978-0-394-50898-6 | 1980 |
| Maximum Sports Performance: With the Nike Sport Research Laboratory | 978-0-394-53682-8 | 1985 |
| The Complete Book of Running | 978-0-394-41159-0 | 1977 |