APA
Tiffen M., Mortimore M. & Gichuki F. j. a. (1994). More people, less erosion. Nairobi: African Center for technology studies.
Chicago
Tiffen Mary, Mortimore Michael and Gichuki Francis joint author. 1994. More people, less erosion. Nairobi: African Center for technology studies.
Harvard
Tiffen M., Mortimore M. and Gichuki F. j. a. (1994). More people, less erosion. Nairobi: African Center for technology studies.
MLA
Tiffen Mary, Mortimore Michael and Gichuki Francis joint author. More people, less erosion. Nairobi: African Center for technology studies. 1994.