See F. Simons, "Proto-Sinaitic — Progenitor of the Alphabet" Rosetta 9 (2011):
Figure Two: "Representative selection of proto-Sinaitic characters with comparison to Egyptian hieroglyphs", (p. 38)
Figure Three: "Chart of all early proto-Canaanite letters with comparison to proto-Sinaitic signs" (p. 39),
Figure Four: "Representative selection of later proto-Canaanite letters with comparison to early proto-Canaanite and proto-Sinaitic signs" (p. 40). See also: Goldwasser (2010), following Albright (1966), "Schematic Table of Proto-Sinaitic Characters" (fig. 1เก็บถาวร 2016-07-03 ที่ เวย์แบ็กแมชชีน).
"M definition and meaning". Collins English Dictionary. เก็บจากแหล่งเดิมเมื่อ 27 February 2021. สืบค้นเมื่อ 9 February 2021.
thefreedictionary.com
acronyms.thefreedictionary.com
"What does M stand for?". The Free Dictionary. เก็บจากแหล่งเดิมเมื่อ 25 November 2020. สืบค้นเมื่อ 9 February 2021.
web.archive.org
See F. Simons, "Proto-Sinaitic — Progenitor of the Alphabet" Rosetta 9 (2011):
Figure Two: "Representative selection of proto-Sinaitic characters with comparison to Egyptian hieroglyphs", (p. 38)
Figure Three: "Chart of all early proto-Canaanite letters with comparison to proto-Sinaitic signs" (p. 39),
Figure Four: "Representative selection of later proto-Canaanite letters with comparison to early proto-Canaanite and proto-Sinaitic signs" (p. 40). See also: Goldwasser (2010), following Albright (1966), "Schematic Table of Proto-Sinaitic Characters" (fig. 1เก็บถาวร 2016-07-03 ที่ เวย์แบ็กแมชชีน).
"What does M stand for?". The Free Dictionary. เก็บจากแหล่งเดิมเมื่อ 25 November 2020. สืบค้นเมื่อ 9 February 2021.
"M definition and meaning". Collins English Dictionary. เก็บจากแหล่งเดิมเมื่อ 27 February 2021. สืบค้นเมื่อ 9 February 2021.