Émile Zola 
The Ladies‘ Paradise 

Although this book was published in 1883, the protagonist’s sales strategy is still being used today. It turns out that targeting female consumers, bait products, and 1+1 were already used in this period. Therefore, this book is a book where you can discover the love story of the department store owner and store clerk, and even the department store sales strategy. This book becomes a very useful book for those who want to learn marketing/selling strategies other than love stories.