Underachievement is many-sided.

MLA

Allen, Dean A. “Underachievement Is Many-Sided.” Personnel & Guidance Journal, vol. 49, no. 7, Mar. 1971, pp. 529–32. EBSCOhost, https://doi.org/10.1002/j.2164-4918.1971.tb03678.x.

APA

Allen, D. A. (1971). Underachievement is many-sided. Personnel & Guidance Journal, 49(7), 529–532. https://doi.org/10.1002/j.2164-4918.1971.tb03678.x

Chicago

Allen, Dean A. 1971. “Underachievement Is Many-Sided.” Personnel & Guidance Journal 49 (7): 529–32. doi:10.1002/j.2164-4918.1971.tb03678.x.