APA (7th ed.) Citation

Michaelson, M. J., Magill, C. W., McKnight, T. D., & Newton, R. J. (1990). A survey of DNA content variation and its molecular basis in Helianthus annuus.

Chicago Style (17th ed.) Citation

Michaelson, Martin J., Clint W. Magill, Thomas D. McKnight, and Ronald J. Newton. A Survey of DNA Content Variation and Its Molecular Basis in Helianthus Annuus. 1990.

MLA (9th ed.) Citation

Michaelson, Martin J., et al. A Survey of DNA Content Variation and Its Molecular Basis in Helianthus Annuus. 1990.