Cita APA (7th ed.)

Harper, R. A. (1905). Sexual reproduction and the organization of the nucleus in certain mildews. Carnegie Inst. of Washington.

Cita Chicago (17th ed.)

Harper, Robert A. Sexual Reproduction and the Organization of the Nucleus in Certain Mildews. Washington, D.C: Carnegie Inst. of Washington, 1905.

Cita MLA (9th ed.)

Harper, Robert A. Sexual Reproduction and the Organization of the Nucleus in Certain Mildews. Carnegie Inst. of Washington, 1905.