APA-čujuhus (7. p.)
Voelkel, N. F. (2011). Pulmonary hypertension: The present and future. People's Medical Publishing House.
Chicago-čujuhus (17. p.)
Voelkel, Norbert F. Pulmonary Hypertension: The Present and Future. Shelton, Connecticut: People's Medical Publishing House, 2011.
MLA-čujuhus (9. p.)
Voelkel, Norbert F. Pulmonary Hypertension: The Present and Future. People's Medical Publishing House, 2011.
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