diff --git a/Hardware/Memory/Basics.md b/Hardware/Memory/Basics.md
index 37cdd66..5ad8715 100644
--- a/Hardware/Memory/Basics.md
+++ b/Hardware/Memory/Basics.md
@@ -8,4 +8,8 @@ tags:
 
 In essence the main memory is just a large storage area for a bunch of binary digits. Each slot for a 0 or 1 is called a bit:
 
-> This is where the running kernal and processes reside - they're just big collections of bits. A CPU is just an operator on memory. It reads its instructions and data from the memory and write back out to the memory. (_How Linux Works: Third Edition_, Brian Ward 2021)
\ No newline at end of file
+> This is where the running kernal and processes reside - they're just big collections of bits. A CPU is just an operator on memory. It reads its instructions and data from the memory and write back out to the memory. (Ward 2021)
+
+## References
+
+Ward, Brian. 2021. _How Linux works_. No Starch Press.
diff --git a/Linux/Devices.md b/Operating_Systems/Devices.md
similarity index 94%
rename from Linux/Devices.md
rename to Operating_Systems/Devices.md
index b55df22..ca4ba0f 100644
--- a/Linux/Devices.md
+++ b/Operating_Systems/Devices.md
@@ -6,7 +6,7 @@ tags:
 
 # Devices
 
-Devices pertain to disks and drives that either exist on the motherboard or that are plugged-in. 
+Devices pertain to [disks](./Disks.md) and drives that either exist on the motherboard or that are plugged-in. 
 
 Devices are files but they are different from ordinary files. There are two types: **block** and **stream**. Device files reside in the `/dev/` directory.
 
diff --git a/Operating_Systems/Disks.md b/Operating_Systems/Disks.md
new file mode 100644
index 0000000..e69de29