Social Psychology Of Motivation by Plaks Paperback ISBN: 9780195431858 SKU: 10321466 $75.00 to $99.95 Select Product Type : New Textbook Used Textbook Ship Available Out of Stock Pickup in Store - FREE! Select Store to check availability. Quantity -+ Add to Cart Reviews 0 BackRatings & ReviewsNo reviews availableBe the first to Write a Review