Cita APA (7a ed.)

Frick, D. (1986). The quality of urban life: Social, psychological, and physical conditions. de Gruyter.

Cita Chicago Style (17a ed.)

Frick, Dieter. The Quality of Urban Life: Social, Psychological, and Physical Conditions. Berlin [u.a.]: de Gruyter, 1986.

Cita MLA (8a ed.)

Frick, Dieter. The Quality of Urban Life: Social, Psychological, and Physical Conditions. de Gruyter, 1986.