MLA

Haenggi, F.F. Zoltan Borbereki : Sculptures In Semi-precious Stones. Johannesburg: Gallery 21, 1981.

APA

Haenggi, F. (1981). Zoltan Borbereki : Sculptures in Semi-Precious Stones. Johannesburg: Gallery 21.

Chicago

Haenggi, F.F. Zoltan Borbereki: Sculptures In Semi-Precious Stones. Johannesburg: Gallery 21, 1981.