Cita APA (7th ed.)

Haworth, M., Hesselbo, S., McElwain, J., Robinson, S., & Brunt, J. (2005). Mid-Cretaceous pCO(2) based on stomata of the extinct conifer Pseudofrenelopsis (Cheirolepidiaceae).

Cita Chicago (17th ed.)

Haworth, M., S. Hesselbo, J. McElwain, SA Robinson, i J. Brunt. Mid-Cretaceous PCO(2) Based on Stomata of the Extinct Conifer Pseudofrenelopsis (Cheirolepidiaceae). 2005.

Cita MLA (9th ed.)

Haworth, M., et al. Mid-Cretaceous PCO(2) Based on Stomata of the Extinct Conifer Pseudofrenelopsis (Cheirolepidiaceae). 2005.

Atenció: Aquestes cites poden no estar 100% correctes.