APA način citiranja

Hellwig, G. (1964). Differential operators of mathematical physics. Addison – Wesley.

Čikaški stil citiranja

Hellwig, Gunter. Differential Operators of Mathematical Physics. Addison – Wesley, 1964.

MLA način citiranja

Hellwig, Gunter. Differential Operators of Mathematical Physics. Addison – Wesley, 1964.

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