it refers to sources that have references by others and it is current. For ex, judge Judy is not a judge, she is not an author. Also, the source should be relevant.
Outline
1960 research showed lower intellectual benefits for bilinguals
The difference between mono or multilingual
It has cognitive effects/benefits to be bilingual
Advantages about multilingualism
You can use it in school, everyday life more importantly it prevents Alzheimers
Thing to add: The background, Current state, Importance,
MLA: Diamond, Jared. "The Benefits of Multilingualism." Science, vol. 330, no. 6002, 15 Oct. 2010, pp. 332-333. EBSCOhost, doi:10.11261/science.1195067.
1,000 words
Present the topic
Explain how I would use the source
Explain why this is a reliable source
Give an example of a bad (not reliable or credible) source and explain it.