APA

Harm Bengen, SEMMEL VERLACH, .HAPPY BIRTHDAY TO JUHU. : SEMMEL VERLACH.

Chicago

Harm Bengen, SEMMEL VERLACH, .HAPPY BIRTHDAY TO JUHU. : SEMMEL VERLACH.

Harvard

Harm Bengen, SEMMEL VERLACH, .HAPPY BIRTHDAY TO JUHU. : SEMMEL VERLACH.

MLA

Harm Bengen, SEMMEL VERLACH, .: SEMMEL VERLACH. .