APA
Williamson E. M. O. D. T. &. E. F. J., . (1996). Pharmmacological methods in phytotherapy research Vol. I. Mehul Book Sales, Mumbai: .
Chicago
Williamson Elizabeth M Okpako David T & Evans Fred J, . 1996. Pharmmacological methods in phytotherapy research Vol. I. Mehul Book Sales, Mumbai: .
Harvard
Williamson E. M. O. D. T. &. E. F. J., . (1996). Pharmmacological methods in phytotherapy research Vol. I. Mehul Book Sales, Mumbai: .
MLA
Williamson Elizabeth M Okpako David T & Evans Fred J, . Pharmmacological methods in phytotherapy research Vol. I. Mehul Book Sales, Mumbai: . 1996.