I need the reference that goes with the citation (Whalley) in this paragraph. I

I need the reference that goes with the citation (Whalley) in this paragraph. I do not need anything else. It must be cited APA 7.
Professional learning can also facilitate necessary modifications to programs and curricula and relates to system theory. Whalley et al. (2018) stated effective leadership is key to establishing socially inclusive and democratic practices, and as such, it has become a key concern for policymakers, researchers, and practitioners in the field of Early Childhood Education and Care.