Cita APA (7a ed.)

Skjeltorp, A., & Helgesen, G. (1989). QUALITATIVE ASPECTS OF CONDENSATION, ORDERING AND AGGREGATION.

Cita Chicago Style (17a ed.)

Skjeltorp, A., y G. Helgesen. QUALITATIVE ASPECTS OF CONDENSATION, ORDERING AND AGGREGATION. 1989.

Cita MLA (9a ed.)

Skjeltorp, A., y G. Helgesen. QUALITATIVE ASPECTS OF CONDENSATION, ORDERING AND AGGREGATION. 1989.