Gaya APA

Greenfield, G, B, {, E, A, }. (1973). A Manual of Radiographic Positioning (-). Philadelphia/ Torontoh: J.B. Lippincott Company.

Gaya MLA

Greenfield, George, B, {, Et, Al, }. "A Manual of Radiographic Positioning". - Philadelphia/ Torontoh: J.B. Lippincott Company, 1973. Text.