APA
Spear L. B., . (2007). Storm-petrels of the Eastern Pacific Ocean: species Assembly and Diversity along Marine Habitat Gradients. WASHINGTON D.C: The American Ornithologists' Union.
Chicago
Spear Larry B, . 2007. Storm-petrels of the Eastern Pacific Ocean: species Assembly and Diversity along Marine Habitat Gradients. WASHINGTON D.C: The American Ornithologists' Union.
Harvard
Spear L. B., . (2007). Storm-petrels of the Eastern Pacific Ocean: species Assembly and Diversity along Marine Habitat Gradients. WASHINGTON D.C: The American Ornithologists' Union.
MLA
Spear Larry B, . Storm-petrels of the Eastern Pacific Ocean: species Assembly and Diversity along Marine Habitat Gradients. WASHINGTON D.C: The American Ornithologists' Union. 2007.