Franklin

MLA

Kirby, D. G, and Merja-Liisa Hinkkanen-Lievonen. The Baltic and the North Seas. .

APA

Kirby, D. G, & Hinkkanen-Lievonen, M. The Baltic and the North seas. .

Chicago

Kirby, D. G., and Merja-Liisa Hinkkanen-Lievonen. The Baltic and the North Seas.