Paranee Khoohaswan. (1992) Anticough effect of fresh guava leaves. Mahidol University,:ม.ป.ท.Paranee Khoohaswan. 1992. Anticough effect of fresh guava leaves. ม.ป.ท.:Mahidol University,;Paranee Khoohaswan. Anticough effect of fresh guava leaves. ม.ป.ท.:Mahidol University, 1992. Print.