I know this doesnt count as an actual Tarantino movie but still I found a reference in it, when Mickey gets to his apartment and sees his ex g.f. waitin for him,
he says: "How long has it been?"
she replies: “Since When?”
I haven’t seen it but I looked it up on IMDB and accordingly there are references to -
A Countess from Hong Kong (1967)
Dressed to Kill (1980)
And it later became the basis for True Romance
Hope this helps it was the best I could do!