APA

Bonjour E., Offler H. . S. & Potter G. . R. (1970). A short history of Switzerland. oxford: Clarendon Press.

Chicago

Bonjour E, Offler H S and Potter G R. 1970. A short history of Switzerland. oxford: Clarendon Press.

Harvard

Bonjour E., Offler H. . S. and Potter G. . R. (1970). A short history of Switzerland. oxford: Clarendon Press.

MLA

Bonjour E, Offler H S and Potter G R. A short history of Switzerland. oxford: Clarendon Press. 1970.