Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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