How to cite if the there are more authors?

If you are citing according to the APA 7 citation style, the rules for citing multiple authors can be found here.

The ČSN ISO 690 standard recommends listing all authors/creators of the cited document. It is advisable to include the full first name as well. However, if there are multiple creators, the following approaches can be used:

• If the cited document has two to five creators – list them all, e.g., NOVÁK, J. and PAVLÍK, R.; NOVÁK, Jan, Richard PAVLÍK, Anna MAŠKOVÁ, and Matěj DVOŘÁK,
• If there are six or more authors – you can list the first author (or one that is highlighted) and then use the abbreviation “et al.”, “and others”, or “a kol.” (if “a kolektiv” is specified in the source),
• If the document has multiple authors, but none are highlighted as dominant, the citation can start with the document’s title (this is most common with encyclopaedias),
• Note: The author may also be a corporation,
• If the opposite is true – the source has no creator – the citation begins with the title of the work or the abbreviation “Anon” (in the case of the Harvard referencing method).