Cita APA (7th ed.)

Gallopin, G., & Öberg, S. (1991). Quality of life. ASCEND 21.

Cita Chicago (17th ed.)

Gallopin, G., i Sture Öberg. Quality of Life. Vienna, Austria: ASCEND 21, 1991.

Cita MLA (9th ed.)

Gallopin, G., i Sture Öberg. Quality of Life. ASCEND 21, 1991.