In-text citation: In-text citation is when you include brief information about a source within the body of your paper. It helps readers easily locate the full reference in the list of references at the end.
Reference page: A reference page is a separate page at the end of your paper that lists all the sources you cited or consulted during your research. It includes detailed information about each source, such as author name, publication year, title, etc.
DOI (Digital Object Identifier): DOI is a unique alphanumeric string assigned to digital content such as articles or books. It provides a persistent link to access the content online and should be included in an APA citation if available.