Source: https://www.audible.com/pd/Business/How-to-Market-a-Book-Third-Edition-Audiobook/B0741S6RKK?ref=a_pd_Busine_c13_moreAuthors_1&pf_rd_p=c4c72369-eb10-4dcb-85cf-90d84a3bcc62&pf_rd_r=M975Z8KDD7FGYYQ9FQ0Y&