APA

Long S. P., Jones M. B., Roberts M. J. & Chapman and Hall (Londyn). (1992). Primary productivity of grass ecosystems of the tropics and sub-tropics. London [etc.]: Chapman & Hall.

Chicago

Long S P, Jones M B, Roberts Michael John and Chapman and Hall (Londyn). 1992. Primary productivity of grass ecosystems of the tropics and sub-tropics. London [etc.]: Chapman & Hall.

Harvard

Long S. P., Jones M. B., Roberts M. J. and Chapman and Hall (Londyn). (1992). Primary productivity of grass ecosystems of the tropics and sub-tropics. London [etc.]: Chapman & Hall.

MLA

Long S P, Jones M B, Roberts Michael John and Chapman and Hall (Londyn). Primary productivity of grass ecosystems of the tropics and sub-tropics. London [etc.]: Chapman & Hall. 1992.