Gaya APA

ROBBERS, J, E., SPEEDIE, M, K. (2013). Pharmacognosy and pharmacobiotechnology (Cet. 1). : Williams & Wilkins.

Gaya MLA

ROBBERS, James, E.., SPEEDIE, MARILYN, K.. "Pharmacognosy and pharmacobiotechnology". Cet. 1 : Williams & Wilkins, 2013. Text.