APA
Heal O. M. J. C. . S. W., . (1993). Towards a global terrestrial observing system [STOS] : Detecting and monitoring change in rerrestrial ecosystems. Paris: UNESCO.
Chicago
Heal O.w Menaut J C Steffen W.L, . 1993. Towards a global terrestrial observing system [STOS] : Detecting and monitoring change in rerrestrial ecosystems. Paris: UNESCO.
Harvard
Heal O. M. J. C. . S. W., . (1993). Towards a global terrestrial observing system [STOS] : Detecting and monitoring change in rerrestrial ecosystems. Paris: UNESCO.
MLA
Heal O.w Menaut J C Steffen W.L, . Towards a global terrestrial observing system [STOS] : Detecting and monitoring change in rerrestrial ecosystems. Paris: UNESCO. 1993.