APA

Carmichael G. a., .Beware the passenger card! : Australian and New Zealand data on population movement between the two countries. : .

Chicago

Carmichael G a, .Beware the passenger card! : Australian and New Zealand data on population movement between the two countries. : .

Harvard

Carmichael G. a., .Beware the passenger card! : Australian and New Zealand data on population movement between the two countries. : .

MLA

Carmichael G a, .: . .