Mich. Comp. Laws § 42.22
An ordinance passed by a township board shall be published at least once. An ordinance is effective immediately upon its publication, unless a date upon which the ordinance shall become effective, which is subsequent to the date of the publication of the ordinance, is specifically provided in the ordinance. The publication of a summary or a true copy of an ordinance after final passage, as a part of the published proceedings of the township board, shall constitute publication of the ordinance. If a summary of an ordinance is published, the township shall include in the publication the designation of a location in the township where a true copy of the ordinance can be inspected or obtained. Each section of an ordinance or a summary of an ordinance shall be preceded by a catch line. A summary of an ordinance may be drafted by the same person, corporation, partnership, firm, association, or other legal entity who drafted the ordinance or by the township board or township zoning board and shall be written in clear and nontechnical language.
MCL 42.22