APA (7th ed.) Citation

Kostka, M. M. (1975). The impact of selected nature center programs on sixth grade pupils. Kostka.

Chicago Style (17th ed.) Citation

Kostka, Madonna Miller. The Impact of Selected Nature Center Programs on Sixth Grade Pupils. [Minneapolis?]: Kostka, 1975.

MLA (9th ed.) Citation

Kostka, Madonna Miller. The Impact of Selected Nature Center Programs on Sixth Grade Pupils. Kostka, 1975.

Warning: These citations may not always be 100% accurate.