Cita APA (7th ed.)
Winkel, H. Qualitative Analysis. International Textbook.
Cita Chicago (17th ed.)
Winkel, Herbert. Qualitative Analysis. Scranton, EUA: International Textbook.
Cita MLA (9th ed.)
Winkel, Herbert. Qualitative Analysis. International Textbook.
Atenció: Aquestes cites poden no estar 100% correctes.