Dyfyniad APA

Lowell, S., & Shields, J. E. (1991). Powder surface area and porosity (3rd ed.). Chapman & Hall.

Dyfyniad Arddull Chicago

Lowell, S., and Joan E. Shields. Powder Surface Area and Porosity. 3rd ed. London ; New York: Chapman & Hall, 1991.

Dyfyniad MLA

Lowell, S., and Joan E. Shields. Powder Surface Area and Porosity. 3rd ed. Chapman & Hall, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.