Origin
From Middle English, from Old English andlang (“on length, along, continuously”), from Proto-Germanic *and- + *lang-, equivalent to Old English and- (prefix) + long. More at endlong, along.

From Middle English, from Old English andlang (“on length, along, continuously”), from Proto-Germanic *and- + *lang-, equivalent to Old English and- (prefix) + long. More at endlong, along.
MLA Style
APA Style