Payne, W.J.
Denitrification
John Wiley & Sons, 1981
 Buku Teks
Marini Wijayanti
Diversity and the Composition of Fatty Acids of Lipolytic Bacteria Isolated from Soil and Aquatic Sediment in a Forest and on an Oil Palm Plantation
Institut Pertanian Bogor. Faculty of Mathematics and Natural Sciences, 2014
 Artikel Jurnal
McIlwain, Charles Howard
The growth of political thought in the west: from the greeks to the end of the middle ages
Macmillan, 1957
 Buku Teks
Effects of autolog saliva on biofilm formation of streptococcus mutans isolated from caries and caries-free subjects
Felicia Paramita ... [and others]
Fakultas Kedokteran Gigi Universitas Indonesia, 2010
 Artikel Jurnal
G. Pituati
Pengaruh nisbah nitrat dan amonium terhadap aktifitas nitrat reduktase, kandungan nitrogen, pertumbuhan dan hasil tanaman Pak Choi (Brassica chinensis l) = Effects of nitrate and ammonium ration on nitrate reductase activity, nitrogen content, growth and yield of Green Pak Choy (Brassica chinensis l)
[s.n], 2006
 Artikel Jurnal