A psychology textbook is an example of an

Secondary source

Explanation: Historical sources are either primary, produced around the time that the event occurred or secondary produced at some remove from the actual historical events.

Writing a psychology textbook can be a worthwhile and rewarding experience ... the camaraderie that comes from intense collaboration on a long-term "noble" undertaking are some examples ... Answer:

Explanation:

Writing a psychology textbook can be a worthwhile and rewarding experience ... the camaraderie that comes from intense collaboration on a long-term "noble" undertaking are some examples ...