APA

Simon S. B., Clark J., . (1975). More values clarification: a guidebook for the use of values clarification in the classroom. San Diego, Calif: Pennant Press.

Chicago

Simon Sidney B, Clark Jay, . 1975. More values clarification: a guidebook for the use of values clarification in the classroom. San Diego, Calif: Pennant Press.

Harvard

Simon S. B., Clark J., . (1975). More values clarification: a guidebook for the use of values clarification in the classroom. San Diego, Calif: Pennant Press.

MLA

Simon Sidney B, Clark Jay, . More values clarification: a guidebook for the use of values clarification in the classroom. San Diego, Calif: Pennant Press. 1975.