APA-referens (7:e uppl.)

HUELSMAN, L. P. (1993). ACTIVE AND PASSIVE ANALOG FILTER DESIGN. MCGRAW HILL.

Chicago-referens (17:e uppl.)

HUELSMAN, L P. ACTIVE AND PASSIVE ANALOG FILTER DESIGN. NEW-YORK: MCGRAW HILL, 1993.

MLA-referens (9:e uppl.)

HUELSMAN, L P. ACTIVE AND PASSIVE ANALOG FILTER DESIGN. MCGRAW HILL, 1993.