Chemistry Matters! : Buku Referensi: Seri Ensiklopedia IPA, Biochemistry Volume 9 / Kirkland, Kyle editor, Thompson, Paul editor, Harris, Tim editor, Jackson, Tom editor, Watt, Susan text [s.l] : PAKAR RAYA, 2007 ind Indeks : hlm. 73-80 Kimia URN:ISBN:979-534-523-7