Manurung AH, Machdar NM, Sijabat J, Manurung A. The Construction of a Portfolio Using Varying Methods and the Effects of Variables on Portfolio Return. IJEFI [Internet]. 2024 Jan. 20 [cited 2024 Dec. 22];14(1):233-41. Available from: https://econjournals.com.tr/index.php/ijefi/article/view/15314