APA Citation

Passos-Freitas, M. H. d. Birds observed by the ornithological expedition to the delta of the Danube April - May 1922. Bucarest.

Chicago Style Citation

Passos-Freitas, Manoel Humberto dos. Birds Observed By the Ornithological Expedition to the Delta of the Danube April - May 1922. Bucarest.

MLA Citation

Passos-Freitas, Manoel Humberto dos. Birds Observed By the Ornithological Expedition to the Delta of the Danube April - May 1922. Bucarest.

Warning: These citations may not always be 100% accurate.