APA

Atkins P., Simmons L. & Roberts B.People, Land and time. London: Arnold.

Chicago

Atkins Peter, Simmons Lan and Roberts Brian.People, Land and time. London: Arnold.

Harvard

Atkins P., Simmons L. and Roberts B.People, Land and time. London: Arnold.

MLA

Atkins Peter, Simmons Lan and Roberts Brian.London: Arnold. .