Cita APA

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

Chicago Edition Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.