APA (7th ed.) Citation
LYYTINEN, P. (1991). DEVELOPMENTAL TRENDS IN CHILDREN'S PRETEND PLAY.
Chicago Style (17th ed.) Citation
LYYTINEN, P. DEVELOPMENTAL TRENDS IN CHILDREN'S PRETEND PLAY. 1991.
MLA (9th ed.) Citation
LYYTINEN, P. DEVELOPMENTAL TRENDS IN CHILDREN'S PRETEND PLAY. 1991.
Warning: These citations may not always be 100% accurate.