This is a short description of Karva Chauth Puja Vidhi in
Hindi found in a Jyothish magazine. It does not give a step by step description
of the Puja Vidhi but contains lot of important explanations regarding the
fruits of observing the puja and how to observe it. The document is in jpeg format and you can
download it by right clicking.
Below is an explanation in pdf but does not elaborate on puja process but contains the fruits of observing Karva Chauth.
Link - Karva Chauth Puja Vidhi in Hindi
Link - Karva Chauth Puja Vidhi in Hindi