Source: https://www.amazon.com/Martian-Andy-Weir/dp/0553418025/ref=as_li_ss_tl?ie=UTF8&qid=1471844635&sr=8-2&keywords=The+Martian&linkCode=sl1&tag=gooderead-20&linkId=36a2931c5e6439c39af138fb409a7c75