Cita APA (7th ed.)

Lange.Oskar. (1971). POLITICAL ECONOMY: PWN- POLISH SCIENTIFIC PUBLISHERS. WARSZAWA.

Cita Chicago (17th ed.)

Lange.Oskar. POLITICAL ECONOMY: PWN- POLISH SCIENTIFIC PUBLISHERS. panstwowe wydawnictwo naukowe: WARSZAWA, 1971.

Cita MLA (9th ed.)

Lange.Oskar. POLITICAL ECONOMY: PWN- POLISH SCIENTIFIC PUBLISHERS. WARSZAWA, 1971.

Atenció: Aquestes cites poden no estar 100% correctes.