Stein (2018) studied whether the early onset of Alzheimer’s disease affected individuals younger than 30. His findings revealed that individuals as young as 20 were affected by the disease (p. 42). Another study found similar data, showing that individuals as young as 18 displayed symptoms of the disease (Tang & Pierce, 2014, p. 231). Even though both studies involved individuals in different hemispheres, the results were similar.
In the first sentence is a narrative in-text citation. This means the author’s name is in the text of the sentence and other information like the year published and page number are in parentheses.
The second sentence has a parenthetical citation. The citation is at the end of the sentence in parentheses and includes all citation information: author name(s), year published, and the page number.
Stein, J. (2018). Short-term memory now gone: The unfortunate circumstances related to Alzheimer’s disease. Science and Discovery, 2(23), 35-57. https://doi.org/10.1076/s0068-3942
Tang, F., & Pierce J. W. (2014). Alzheimer’s disease in young adults. Journal on Aging, 14(3), 220-243.
These are the references for the in-text citation examples shown above. References are listed on the final page of a paper and contain full information about each source.