| Author | Titles | | 1.
| Ritchie, Andrew Carnduff | 3 | | 2.
| Ritchie, George | 1 | | 3.
| Ritchie, Hugh | 1 | | 4.
| Ritchie, Ian | 3 | | 5.
| Ritchie, John | 1 | | 6.
| Ritchie, Madonna, 1958- | 0 | | 7.
| Author is: Madonna 1958- | 1 | | 8.
| Ritchie, Mark | 5 | | 9.
| Ritchie, Matthew, 1964- | 4 | | 10.
| Ritchie, Ross | 1 | | 11.
| Ritchie, Steve | 1 |
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