Balfour, Edward Green (1871). "agar". Cyclopædia of India and of eastern and southern Asia, commercial, industrial and scientific: products of the mineral, vegetable and animal kingdoms, useful arts and manufactures. Scottish and Adelphi Presses. p. 50.
Zimbro, Mary Jo; Power, David A.; Miller, Sharon M.; Wilson, George E.; Johnson, Julie A. (eds.). Difco & BBL Manual(PDF) (2nd ed.). Becton Dickinson and Company. p. 6. Archived from the original(PDF) on 2012-06-06. Retrieved 2013-07-17.
Williams, Peter W.; Phillips, Glyn O. (2000). "2: Agar". Handbook of hydrocolloids. Cambridge, England: Woodhead. p. 91. ISBN1-85573-501-6. Agar is made from seaweed and it is attracted to bacteria.
Robert Koch (10 April 1882) "Die Aetiologie der Tuberculose" (The etiology of tuberculosis), Berliner Klinische Wochenschrift (Berlin Clinical Weekly), 19 : 221–230. From p. 225: "Die Tuberkelbacillen lassen sich auch noch auf anderen Nährsubstraten kultiviren, wenn letztere ähnliche Eigenschaften wie das erstarrte Blutserum besitzen. So wachsen sie beispielsweise auf einer mit Agar-Agar bereiteten, bei Blutwärme hart bleibenden Gallerte, welche einen Zusatz von Fleischinfus und Pepton erhalten hat." (The tubercule bacilli can also be cultivated on other media, if the latter have properties similar to those of congealed blood serum. Thus they grow, for example, on a gelatinous mass which was prepared with agar-agar, which remains solid at blood temperature, and which has received a supplement of meat broth and peptone.)
Wilkinson, Richard James (1932). "agar". A Malay-English dictionary (romanised). Vol. I. Mytilene, Greece: Salavopoulos & Kinderlis. p. 9 – via TROVE, National Library of Australia.
Zimbro, Mary Jo; Power, David A.; Miller, Sharon M.; Wilson, George E.; Johnson, Julie A. (eds.). Difco & BBL Manual(PDF) (2nd ed.). Becton Dickinson and Company. p. 6. Archived from the original(PDF) on 2012-06-06. Retrieved 2013-07-17.
