Because it's pronounced Eff which starts with a vowel.
Still should be A F though but it's counter-intuitive.
Actually, iirc they changed that in this year's mla standards. It now goes by the sound exclusively, not the spelling. They've also gotten rid of -i as a plural. So now it's octopuses, cactuses, etc.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You can download files in this forum