Purwokerto, I., F., U., M., UI, I., O., ., M.(1995).Handbook of Non Invasive Methods and the skin (Second Edition ( 2 )).Baca Raton, Florida:C R C Press.
Gaya MLA
Purwokerto, I., F., U., M., UI, I., O., ., M..Handbook of Non Invasive Methods and the skin.Second Edition ( 2 )Baca Raton, Florida:C R C Press,1995.Text.