source: In addition to the terms of this Agreement, you may be required to have a separate agreement with IBM to acquire certain IBM Products for these purposes.
target: You might be required to obtain a separate agreement with IBM to acquire certain IBM products for these purposes. This is in addition to the terms stated in this Agreement.
references: You might be required to obtain a separate agreement with IBM to acquire certain IBM products for these purposes. This is in addition to the terms stated in this Agreement.