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He explicitly distinguishes this marketing book from Gino Wickman’s unrelated same-title book. The publisher verifies coauthor Justin Mares.

This text documents what the source says, but it is not verified as a word-for-word quote.

Conor McCarthy · undated · accessed 2026-10-01

Podcast · Original interview selection

Original host transcript at22:11-22:45 directly inspected. Undated source has access date only; no exact excerpt or preferred edition claim.

Conservative English paraphrase of Yanai’s own Japanese endorsement; no exact translated quote asserted.

This text documents what the source says, but it is not verified as a word-for-word quote.

PRESIDENT / PRESIDENT Books · 2019-01-11 · accessed 2026-10-01

Interview · Direct book interview

Direct interview Q&A praises the book and expresses a wish to distribute to all employees; this citation uses the interview answer, not the promotional footer. Japanese title/author verified with national-library record029280525.

Conservative English paraphrase of Yanai’s own Japanese endorsement; no exact translated quote asserted.

This text documents what the source says, but it is not verified as a word-for-word quote.

PRESIDENT / PRESIDENT Books · 2011-01-23 · accessed 2026-10-01

Article · Signed reading endorsement

Signed winter2010 piece, published2011-01-23. Separate explicit endorsement names original Professional Manager as lifetime most-learned book. Reader instruction about Notes adaptation is not transferred to original.