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Maybe it is worth including the following reference:

• Petrunin, Anton. "Extra pearls in graph theory". arXiv: 1812.06627 [ math.CO].

It included few corrections plus some extra topics. ⰕⰑⰞⰀ 02:29, 24 March 2021 (UTC) reply

ArXiv preprints do not generally count as reliable sources. Has it been published anywhere else? — David Eppstein ( talk) 05:55, 24 March 2021 (UTC) reply

https://www.amazon.com/dp/1650147198

Self-published books also generally do not count as reliable sources. — David Eppstein ( talk) 20:01, 24 March 2021 (UTC) reply