APA

Gibbs J. P. S. W. G. V. H., . (2003). An assessment of a Galapagos rail population over thirteen years (1986 to 2000). : .

Chicago

Gibbs J P Shriver W G Vargas H, . 2003. An assessment of a Galapagos rail population over thirteen years (1986 to 2000). : .

Harvard

Gibbs J. P. S. W. G. V. H., . (2003). An assessment of a Galapagos rail population over thirteen years (1986 to 2000). : .

MLA

Gibbs J P Shriver W G Vargas H, . An assessment of a Galapagos rail population over thirteen years (1986 to 2000). : . 2003.