Krebs, C. J. (1999). Ecological methodology. Menlo Park, Calif: Benjamin/Cummings.
Trích dẫn kiểu ChicagoKrebs, Charles J. Ecological Methodology. Menlo Park, Calif: Benjamin/Cummings, 1999.
MLA引文Krebs, Charles J. Ecological Methodology. Menlo Park, Calif: Benjamin/Cummings, 1999.
警告:這些引文格式不一定是100%准確.