Add Haskell in depth book

haskell_books.bib

@@ -29,3 +29,15 @@
 	note = {[Online; accessed 22. Apr. 2023]},
 	url = {https://staff.fnwi.uva.nl/d.j.n.vaneijck2/HR}
 }
+
+@book{haskell-in-depth,
+	author = {Bragilevsky, Vitaly},
+	title = {{Haskell in Depth}},
+	journal = {O{'}Reilly Online Learning},
+	year = {2021},
+	month = jun,
+	isbn = {978-1-61729540-9},
+	publisher = {Manning Publications},
+	language = {english},
+	url = {https://www.oreilly.com/library/view/haskell-in-depth/9781617295409}
+}