1Q84 by Haruki Murakami: ““Your favorite novel is …?” “The Tale of the Heike.” Tengo was astounded. To think that a thirteenth-century samurai war chronicle should be her favorite “novel”!”
Cosmos by Alexander von Humboldt: “What happened next is told in The Tale of the Heike: "The Emperor was seven years old that year but looked much older..."”
Kwaidan: Stories and Studies of Strange Things by Lafcadio Hearn: “Formerly the professional minstrels who recited the Heike-Monogatari, and other tragical histories, were called biwa-hoshi, or "lute-priests."”
Arrowroot by Jun'ichirō Tanizaki: “There is no need now to explain what age the Genbun era was, or to cite the Azuma Kagami or The Tale of the Heike on the life of Lady Shizuka. [auto-translated]”