APA (7th ed.) Citation

Howland, D., & Oliver, R. (1995). Morphological and molecular variation in natural populations of Betula.

Chicago Style (17th ed.) Citation

Howland, D., and Richard Oliver. Morphological and Molecular Variation in Natural Populations of Betula. 1995.

MLA (9th ed.) Citation

Howland, D., and Richard Oliver. Morphological and Molecular Variation in Natural Populations of Betula. 1995.

Warning: These citations may not always be 100% accurate.