How to abbreviate Sierra?

The ways to abbreviate Sierra.

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Sierra(Navy phonetic alphabet, Army phonetic alphabet, Military alphabet)
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APASmart Define. (2018). sierra. Retrieved October 1, 2026, from http://smartdefine.org/sierra/abbreviations/a/Army_phonetic_alphabet
ChicagoSmart Define. 2018. "sierra" http://smartdefine.org/sierra/abbreviations/a/Army_phonetic_alphabet (accessed October 1, 2026).
HarvardSmart Define 2018, sierra, Smart Define, viewed 1 October, 2026, <http://smartdefine.org/sierra/abbreviations/a/Army_phonetic_alphabet>.
MLASmart Define. "sierra" 26 January 2018. Web. 1 October 2026. <http://smartdefine.org/sierra/abbreviations/a/Army_phonetic_alphabet>