If any journal article in your reference list is not yet published, then it should be specifically mentioned and marked as an “Unpublished manuscript.” Use the below format to understand and create your own entry.
Format
Last Name, Initials. (Year). Title [Unpublished manuscript]. Name of the Department, Name of the University.
Example
Rajeshwari, K.L., & Kernool, L. (2021). A microscopic view into the minds of toddlers. [Unpublished manuscript]. Department of Psychology, University of Hogsworth.