Aini Hanapi, N. (2019) “Pengaruh Masa Panen Terhadap Kadar Vitamin C Kangkung Air (Ipomea aquatica) yang Terpapar Logam Berat Cd (Cadmium) Untuk Pembuatan LKPS Biologi: The Effects of Harvesttime on Vitamin-c Levels of Water Exposed to Heavy Metal Cd for the Manufacture of Biological LKPS”, BIODIK, 5(3), pp. 250-261. doi: 10.22437/bio.v5i3.8108.