Other
Net Inc Technologies: Subsidiary Motions and Functions
Very clear explanation of subsidiary motions and how they are used in a meeting from NetInc Technologies. Contains a good deal of information in an easy-to-read format.
Bartleby
Bartleby.com: Robert's Rules of Order Revised: Subsidiary Motions
Robert's Rules of Order Revised provides this definition of subsidiary motions in the context of a committee meeting and the like.