Lua APA (7ú heag.)

Sweeting, M. M., & Pfeffer, K. (1976). Karst processes. Gebr. Borntraeger.

Lua i Stíl Chicago (17ú heag.)

Sweeting, Marjorie Mary, agus Karl-Heinz Pfeffer. Karst Processes. Berlin: Gebr. Borntraeger, 1976.

Lua MLA (8ú heag.)

Sweeting, Marjorie Mary, agus Karl-Heinz Pfeffer. Karst Processes. Gebr. Borntraeger, 1976.

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