- EbookThe Science of InfluenceKevin Hogan
- EbookPsychology of Persuasion, TheKevin Hogan
- EbookCovert PersuasionKevin Hogan
- EbookCovert PersuasionKevin Hogan
- EbookCovert PersuasionKevin Hogan
- EbookInvisible InfluenceKevin Hogan
- EbookThe Secret Language of BusinessKevin Hogan
- EbookThe Science of InfluenceKevin Hogan
- EbookCan't Get ThroughRob Stubbs