diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 28d2ef0..b5cfd61 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -1321,7 +1321,7 @@
 				- Support costs, (5 marks) (2019)
 				- Indirect allocations as part of Overhead costs. (5 marks) (2019)
 			- ### New products and New product development (2019, 2018)
-				- #### Booz, Allen & Hamilton (1982) Classification Scheme (2019)
+				- #### Booz, Allen & Hamilton (1982) Classification Scheme (2019) Topic 17
 					- Repositioning (4 marks) (2019)
 					- four (4) elements through which products can be differentiated (2019)
 					- the five alternatives that are open to the firm ( 2018)