A detailed study (Eysenck, 2006, 2009) has indicated that cognition is a poorly understood concept.
(Author, Year, p./pp. Page number/s)
Author (Year, p./pp. Page number/s)
Eysenck (2009, p. 23) has argued that “cognition is woefully misunderstood”.
Author, A. A., Author, B. B., & Author, C. C. (year). Title of the book. Publisher Name. http://doi.org/xxxx OR http://xxxx
NOTE: Arrange two or more works by the same author (or the same group of authors listed in the same order) by year of publication (earliest first). If a work is undated (n.d.), place it before works with dates, and place any works in-press after those with dates.
Eysenck, M. (2006). Fundamentals of cognition. Psychology Press.
Eysenck, M. (2009). Fundamentals of Psychology. Psychology Press, https://doi.org/10.4324/9781315736945