Look at the "group" feature on your account. Look for a common thread between the articles you want to link, choose a group name, and save it. Then grab and move each hub you want to put in the group to the group name. Those hubs will be referenced at the bottom of each article in the same order they show up in the group, i.e. the one before and the one after will be shown.
Once you have the group name, then when you write a new hub for that group, you can assign it to the group of your choice. Just click the "group" tab next to your summary tab and choose the group name you want from its dropdown menu.