diff --git a/internet_protocol/ip_assets/internet_protocol.css b/internet_protocol/ip_assets/internet_protocol.css
index c42ef22..79ab283 100644
--- a/internet_protocol/ip_assets/internet_protocol.css
+++ b/internet_protocol/ip_assets/internet_protocol.css
@@ -1,4 +1,4 @@
 .headImg {
     background-image: url(network.jpg);
-    padding-bottom: 15em;
+    padding-bottom: 20em;
 }
\ No newline at end of file
diff --git a/sitewide_assets/bibliography.txt b/sitewide_assets/bibliography.txt
index 89c2b88..28d53bc 100644
--- a/sitewide_assets/bibliography.txt
+++ b/sitewide_assets/bibliography.txt
@@ -1 +1,13 @@
-sdfgsdfgsdg
\ No newline at end of file
+ARCLAB, , A List of SMTP and IMAP Server. Available: https://www.arclab.com/en/kb/email/list-of-smtp-and-imap-servers-mailserver-list.html [Apr 17, 2020].
+
+BBC BITESIZE, , Internet protocols - The internet - GCSE Computer Science Revision. Available: https://www.bbc.co.uk/bitesize/guides/zp9jpv4/revision/6 
+	[Apr 17, 2020].
+EXAMCOLLECTION, , Overview of common TCP and UDP default ports. Available: https://www.examcollection.com/certification-training/network-plus-overview-of
+	-common-tcp-and-udp-default-ports.html [Apr 17, 2020].
+
+W3, , The Internet Protocol Sack
+	. Available: https://www.w3.org/People/Frystyk/thesis/TcpIp.html [Apr 17, 2020].
+
+W3SCHOOLS, , Types of Network Protocols and Their Uses. Available: https://www.w3schools.in/types-of-network-protocols-and-their-uses/ [Apr 17, 2020].
+
+WHATISMYIPADDRESS, , What Is Simple Mail Transfer Protocol?. Available: https://whatismyipaddress.com/smtp [Apr 17, 2020].