Watch this short video from the University of Arkansas Libraries to learn what a citation is and how to read one
Business and Accounting use APA citation style most frequently. Chicago Manual of Style is also used less frequently. This page includes some resources to get you started with these two citation styles. However, it's always best to ask your professor if they have a preference as to which style you use for your assignments. Below is a link to the library's larger citation guide along with some quick tips for the three major citation styles to get you started.
Data, especially economics and financial data, can be tricky to cite correctly. However, it is critical that you cite data correctly in your work in order to help your readers connect back to the original source so that they can replicate your analysis.