How to abbreviate Once in a Blue Moon?

The ways to abbreviate Once in a Blue Moon.

Stands For|0Abbreviated As|2Related|0
2
OBM:
Once in a Blue Moon
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OIABM:
Once in a Blue Moon
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APASmart Define. (2018). once in a blue moon. Retrieved September 28, 2026, from http://smartdefine.org/once_in_a_blue_moon/abbreviations/a
ChicagoSmart Define. 2018. "once in a blue moon" http://smartdefine.org/once_in_a_blue_moon/abbreviations/a (accessed September 28, 2026).
HarvardSmart Define 2018, once in a blue moon, Smart Define, viewed 28 September, 2026, <http://smartdefine.org/once_in_a_blue_moon/abbreviations/a>.
MLASmart Define. "once in a blue moon" 7 February 2018. Web. 28 September 2026. <http://smartdefine.org/once_in_a_blue_moon/abbreviations/a>