Roll-Hansen, N. Sources of Johannsen's Genotype Theory: Nils Roll-Hansen. Conference A Cultural History of Heredity III : 19th and early 20th centuries.(2005).
Citação do estilo Chicago (17ª ed.)Roll-Hansen, Nils. "Sources of Johannsen's Genotype Theory: Nils Roll-Hansen." Conference A Cultural History of Heredity III : 19th and Early 20th Centuries.(2005) .
Citação MLA (8ª ed.)Roll-Hansen, Nils. "Sources of Johannsen's Genotype Theory: Nils Roll-Hansen." Conference A Cultural History of Heredity III : 19th and Early 20th Centuries.(2005), .
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.