APA

USA, . (1938). Regulations for the control of the manufacture, importation, and sale of the arsphenamine and its derivatives referred to collectively as "the arsphenamines". Washington: U. S. Govt. print. off.

Chicago

USA, . 1938. Regulations for the control of the manufacture, importation, and sale of the arsphenamine and its derivatives referred to collectively as "the arsphenamines". Washington: U. S. Govt. print. off.

Harvard

USA, . (1938). Regulations for the control of the manufacture, importation, and sale of the arsphenamine and its derivatives referred to collectively as "the arsphenamines". Washington: U. S. Govt. print. off.

MLA

USA, . Regulations for the control of the manufacture, importation, and sale of the arsphenamine and its derivatives referred to collectively as "the arsphenamines". Washington: U. S. Govt. print. off. 1938.