... Papaver somniferum, its liquid preparations, morphia [and salts].

MLA

Thompson, V. Oscar. ... Papaver somniferum, its liquid preparations, morphia [and salts]. [Place of publication not identified] : [publisher not identified], 1859.

APA

Thompson, V. (1859). ... Papaver somniferum, its liquid preparations, morphia [and salts]. [Place of publication not identified] : [publisher not identified].

Chicago

Thompson, V. Oscar. ... Papaver somniferum, its liquid preparations, morphia [and salts]. [Place of publication not identified] : [publisher not identified], 1859.