APA-viite (7. p.)

Leffelaar, P. (1993). On systems analysis and simulation of ecological processes: With examples in CSMP and FORTRAN. Kluwer.

Chicago-viite (17. p.)

Leffelaar, P.A. On Systems Analysis and Simulation of Ecological Processes: With Examples in CSMP and FORTRAN. Dordrecht: Kluwer, 1993.

MLA-viite (9. p.)

Leffelaar, P.A. On Systems Analysis and Simulation of Ecological Processes: With Examples in CSMP and FORTRAN. Kluwer, 1993.