APA Style

Geis,D, Caponera, D.A.. (1961). Let's Travel in Switzerland (Ref:1) . USA: CRC, Inc., New York.

Chicago Style

Geis,D, Caponera, D.A.. Let's Travel in Switzerland (Ref:1). USA: CRC, Inc., New York, 1961. .

MLA Style

Geis,D, Caponera, D.A.. Let's Travel in Switzerland (Ref:1). USA: CRC, Inc., New York, 1961. .

Turabian Style

Geis,D, Caponera, D.A.. Let's Travel in Switzerland (Ref:1). USA: CRC, Inc., New York, 1961. .