APA (7e ed.) Bronvermelding

Shutts, G. C., & Weir, W. W. (1927). Agricultural arithmetic. Webb Pub. Co..

Chicago (17e ed.) Bronvermelding

Shutts, George C., en Wilbert Walter Weir. Agricultural Arithmetic. St. Paul, Minn.: Webb Pub. Co., 1927.

MLA (8e ed.) Bronvermelding

Shutts, George C., en Wilbert Walter Weir. Agricultural Arithmetic. Webb Pub. Co., 1927.