Citazione APA

Simmons, H. G. (1906). The vascular plants in the flora of Ellesmereland. Printed by A.W. Brøgger.

Stile di citazione Chicago

Simmons, Herman Georg. The Vascular Plants in the Flora of Ellesmereland. Kristiania: Printed by A.W. Brøgger, 1906.

Citazione MLA

Simmons, Herman Georg. The Vascular Plants in the Flora of Ellesmereland. Printed by A.W. Brøgger, 1906.