19-11-2014, 02:35 PM
Rule 6. There are various approaches to plurals for initials, capital letters, and numbers used as nouns.
Examples:
She consulted with three M.D.s.
She consulted with three M.D.'s.
Some write M.D.'s to give the s separation from the second period.
Many writers and editors prefer an apostrophe after single capital letters only:
Examples:
I made straight A's.
He learned his ABCs.
There are different schools of thought about years and decades. The following examples are all in widespread use:
Examples:
the 1990s
the 1990's
the '90s
the 90's
Awkward: the '90's
Examples:
She consulted with three M.D.s.
She consulted with three M.D.'s.
Some write M.D.'s to give the s separation from the second period.
Many writers and editors prefer an apostrophe after single capital letters only:
Examples:
I made straight A's.
He learned his ABCs.
There are different schools of thought about years and decades. The following examples are all in widespread use:
Examples:
the 1990s
the 1990's
the '90s
the 90's
Awkward: the '90's
Phase 1 D-Turdo, K14@24 psi, De-cat, meaty backbox, Bosch pump, grinded LDA pin, duel air fed K&N =133.7bhp & 188ft/lbs