Citazione Stile APA (7a Edizione)

Elman, R., & Amadon, D. (1977). First in the field: America's pioneering naturalists. Van Nostrand Reinhold Company.

Citazione stile Chigago Style (17a edizione)

Elman, Robert, e Dean Amadon. First in the Field: America's Pioneering Naturalists. New York [i pozostałe]: Van Nostrand Reinhold Company, 1977.

Citatione MLA (9a ed.)

Elman, Robert, e Dean Amadon. First in the Field: America's Pioneering Naturalists. Van Nostrand Reinhold Company, 1977.