APA (7e ed.) Bronvermelding

Brown, C. C. Directory of American cement industries and hand-book for cement users. Municipal engineering Co.

Chicago (17e ed.) Bronvermelding

Brown, Charles Carroll. Directory of American Cement Industries and Hand-book for Cement Users. Indianapolis New York: Municipal engineering Co.

MLA (8e ed.) Bronvermelding

Brown, Charles Carroll. Directory of American Cement Industries and Hand-book for Cement Users. Municipal engineering Co.