D. Daud, A. Azahar, S. S. F. Zainal Abidin, and A. Tawang, “THE EFFECTS OF COSMOS CAUDATUS AND PIPER SARMENTOSUM AQUEOUS EXTRACTS ON MALE MICE FERTILITY”, Int J Pharm Pharm Sci, vol. 7, no. 12, pp. 296–298, Dec. 2015.