"Salinan arsip"(PDF). Diarsipkan dari versi asli(PDF) tanggal 2011-07-24. Diakses tanggal 2013-10-23.
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Filipe Santos et al. High-Level Folate Production in Fermented Foods by the B12 Producer Lactobacillus reuteri JCM1112. APPLIED AND ENVIRONMENTAL MICROBIOLOGY, May 2008, Vol. 74, No. 10, p. 3291–3294. http://aem.asm.org/content/74/10/3291.full.pdfDiarsipkan 2018-07-21 di Wayback Machine..
"1". Bulletin of the Maryland Agricultural Experiment Station. Maryland Agricultural Experiment Station (121-145): 6. 1907. Diakses tanggal 2012-12-01.
Filipe Santos et al. High-Level Folate Production in Fermented Foods by the B12 Producer Lactobacillus reuteri JCM1112. APPLIED AND ENVIRONMENTAL MICROBIOLOGY, May 2008, Vol. 74, No. 10, p. 3291–3294. http://aem.asm.org/content/74/10/3291.full.pdfDiarsipkan 2018-07-21 di Wayback Machine..
"Salinan arsip"(PDF). Diarsipkan dari versi asli(PDF) tanggal 2011-07-24. Diakses tanggal 2013-10-23.