APA
Jones Lang LaSalle, . (1999). European office index. - First quarter, second quarter, third quarter & fourth quarter 1999. : Jones Lang LaSalle.
Chicago
Jones Lang LaSalle, . 1999. European office index. - First quarter, second quarter, third quarter & fourth quarter 1999. : Jones Lang LaSalle.
Harvard
Jones Lang LaSalle, . (1999). European office index. - First quarter, second quarter, third quarter & fourth quarter 1999. : Jones Lang LaSalle.
MLA
Jones Lang LaSalle, . European office index. - First quarter, second quarter, third quarter & fourth quarter 1999. : Jones Lang LaSalle. 1999.