JUAN ARIZAGA, E. B. (2009). Fuel load and flight ranges of blackcaps Sylvia atricapilla in northern Iberia during autumn and spring migrations. Oxford University Press.
Chicago-referens (17:e uppl.)JUAN ARIZAGA, EMILIO BARBA. Fuel Load and Flight Ranges of Blackcaps Sylvia Atricapilla in Northern Iberia During Autumn and Spring Migrations. Oxford University Press, 2009.
MLA-referens (9:e uppl.)JUAN ARIZAGA, EMILIO BARBA. Fuel Load and Flight Ranges of Blackcaps Sylvia Atricapilla in Northern Iberia During Autumn and Spring Migrations. Oxford University Press, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.