Compra aquest llibre
| Venedor | Preu | Puntuació del venedor |
|---|---|---|
| Psychology Press | Sense preu | |
| Amazon.com | Sense preu | |
| Barnes&Noble.com | Sense preu | |
| Books-A-Million | Sense preu | |
| IndieBound | Sense preu | |
| Amazon.com | 111,01 USD | |
| AbeBooks.com | 250,83 USD | |
| eBay - thrift.books | 50,41 USD | |
| Thriftbooks.com | 100,00 USD | |
| Better World Books | 53,10 USD | |
| eBay - zuber | 75,95 USD | |
| Walmart - Better World Books Marketplace, Inc. | 54,11 USD | |
| eBay - betterworldbooks | 54,11 USD |