Update car.py

car.py

@@ -12,7 +12,15 @@ VERSION = datasets.Version("1.0.0")
 DESCRIPTION = "Car dataset from the UCI repository."
 _HOMEPAGE = "https://archive-beta.ics.uci.edu/dataset/19/car+evaluation"
 _URLS = ("https://archive-beta.ics.uci.edu/dataset/19/car+evaluation")
-_CITATION = """"""
+_CITATION = """
+@misc{misc_car_evaluation_19,
+  author       = {Bohanec,Marko},
+  title        = {{Car Evaluation}},
+  year         = {1997},
+  howpublished = {UCI Machine Learning Repository},
+  note         = {{DOI}: \url{10.24432/C5JP48}}
+}
+"""
 
 # Dataset info
 _BASE_FEATURE_NAMES = [