LongLeftArrow 
LongLeftArrow[x,y,…]
displays as .
Details

- LongLeftArrow[x,y,…] has no built-in meaning.
is by default interpreted as LongLeftArrow[x,y].
can be entered as \[LongLeftArrow] or
<--
.
Examples
Basic Examples (1)
Wolfram Research (1996), LongLeftArrow, Wolfram Language function, https://reference.wolfram.com/language/ref/LongLeftArrow.html.
Text
Wolfram Research (1996), LongLeftArrow, Wolfram Language function, https://reference.wolfram.com/language/ref/LongLeftArrow.html.
CMS
Wolfram Language. 1996. "LongLeftArrow." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/LongLeftArrow.html.
APA
Wolfram Language. (1996). LongLeftArrow. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/LongLeftArrow.html