Søkk : a piece for accordeon and tape

MLA

Hellstenius, Henrik and Alexander Street Press. Søkk : a piece for accordeon and tape. [Copenhagen, Demark] : Wilhelm Hansen, [date of publication not identified]

APA

Hellstenius, H. & Alexander Street Press. (0). Søkk : a piece for accordeon and tape. [Copenhagen, Demark] : Wilhelm Hansen.

Chicago

Hellstenius, Henrik and Alexander Street Press. Søkk : a piece for accordeon and tape. [Copenhagen, Demark] : Wilhelm Hansen, [date of publication not identified]