Tohutoro APA (7th ed.)
Arndt, R. Saudi Aramco World: January - February 2011, vol. 62, no. 1 : Riding Higher. Aramco Services.
Tohutoru Kātū Chicago (17th ed.)
Arndt, Robert. Saudi Aramco World: January - February 2011, Vol. 62, No. 1 : Riding Higher. Houston, EUA: Aramco Services.
Tohutoro MLA (9th ed.)
Arndt, Robert. Saudi Aramco World: January - February 2011, Vol. 62, No. 1 : Riding Higher. Aramco Services.
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