APA ציטוט

Ivanov, M. V., & Freney, J. R. The global biogeochemical sulphure cycle.

Chicago Edition Citation

Ivanov, M. V., and J. R. Freney. The Global Biogeochemical Sulphure Cycle.

ציטוט MLA

Ivanov, M. V., and J. R. Freney. The Global Biogeochemical Sulphure Cycle.