APA

Beall C. M., Brittenham G. M., Macuaga F. & Barragan M. (1990). Variation in hemoglobin concentration among samples of high-altitude natives in the Andes and the Himalayas. : American journal of human biology : the official journal of the Human Biology Council.

Chicago

Beall Cynthia M, Brittenham Gary M, Macuaga Francisco and Barragan Mario. 1990. Variation in hemoglobin concentration among samples of high-altitude natives in the Andes and the Himalayas. : American journal of human biology : the official journal of the Human Biology Council.

Harvard

Beall C. M., Brittenham G. M., Macuaga F. and Barragan M. (1990). Variation in hemoglobin concentration among samples of high-altitude natives in the Andes and the Himalayas. : American journal of human biology : the official journal of the Human Biology Council.

MLA

Beall Cynthia M, Brittenham Gary M, Macuaga Francisco and Barragan Mario. Variation in hemoglobin concentration among samples of high-altitude natives in the Andes and the Himalayas. : American journal of human biology : the official journal of the Human Biology Council. 1990.