Altschuler, M. (2016). Hacking sales: The ultimate playbook and tool guide to building a high velocity sales machine. Hoboken, New Jersey: John Wiley and Sons.
Chicago-tyylinen lähdeviittausAltschuler, Max. Hacking Sales: The Ultimate Playbook and Tool Guide to Building a High Velocity Sales Machine. Hoboken, New Jersey: John Wiley and Sons, 2016.
MLA-viiteAltschuler, Max. Hacking Sales: The Ultimate Playbook and Tool Guide to Building a High Velocity Sales Machine. Hoboken, New Jersey: John Wiley and Sons, 2016.
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