Southeast Asia, South East Asia or South-East Asia

[SatuR]

So I'm slightly confused about how to spell Southeast Asia. I usually write in UK English and I had thought it's South-East Asia, but I've also seen South East Asia, Southeast Asia and even southeast Asia. Help! Thanks.

[Evelyn]

Minnesotans spell it Southeast Asia. Dunno if that helps.

[Celeste Stewart]

The AP Stylebook says: Southeast Asia.

[SatuR]

Thanks! I think South East Asia is the British way to spell it.