Gaya APA

Hasibuan, S, R., Morley, R. (1990). Introduction To Palynology: With Emphasis On South East Asia (-). Purwokerto: [s.n.].

Gaya MLA

Hasibuan, Sofia, Rangkuti., Morley, R.J. "Introduction To Palynology: With Emphasis On South East Asia". - Purwokerto: [s.n.], 1990. Text.