The Five Shelves: Petrova, Moreau, Lindqvist, Vásquez, and Okafor

Five authors — Petrova, Moreau, Lindqvist, Vásquez, and Okafor — each have exactly one bookmark, binding, cover colour, and genre, and no two share any of them. Match each author to their bookmark, binding, cover colour, and genre from these clues: 1. The author whose book holds a pressed leaf is the historian. 2. The author with the hardback is the author with the black cover. 3. Lindqvist is not the author whose book holds a ribbon bookmark. 4. The author with the hardback is the science-fiction writer. 5. Petrova is not the author whose book holds a pressed leaf. 6. Petrova is not the author whose book holds a ribbon bookmark. 7. The author whose book holds a postcard is the author with the green cover. 8. The author with the green cover is the cookbook writer. 9. The author whose book holds a receipt is the mystery writer. 10. Okafor is not the author with the spiral-bound edition. 11. The author with the cloth-bound edition is the author with the gold cover. 12. The author whose book holds a ribbon bookmark is the author with the white cover. 13. Okafor is not the author whose book holds a ribbon bookmark. 14. Petrova is not the author whose book holds a postcard. 15. Vásquez is not the author with the spiral-bound edition. 16. The author with the paperback is the mystery writer. 17. The author with the spiral-bound edition is the cookbook writer. 18. Vásquez is not the memoirist. 19. Vásquez is not the author whose book holds a pressed leaf. 20. Petrova is not the science-fiction writer.