APA

Johnson S. R., Johnson R. B. & Regional Education Laboratory for the Carolinas and Virginia. (19711970). Developing individualized instructional material: a self-instructional material in itself. Palo Alto, Calif: Westinghouse Learning Press.

Chicago

Johnson Stuart R, Johnson Rita B and Regional Education Laboratory for the Carolinas and Virginia. 19711970. Developing individualized instructional material: a self-instructional material in itself. Palo Alto, Calif: Westinghouse Learning Press.

Harvard

Johnson S. R., Johnson R. B. and Regional Education Laboratory for the Carolinas and Virginia. (19711970). Developing individualized instructional material: a self-instructional material in itself. Palo Alto, Calif: Westinghouse Learning Press.

MLA

Johnson Stuart R, Johnson Rita B and Regional Education Laboratory for the Carolinas and Virginia. Developing individualized instructional material: a self-instructional material in itself. Palo Alto, Calif: Westinghouse Learning Press. 19711970.