Science and the religious life a psycho-physiological approach by Rahn, Carl Leo 1881-

Judgment and reasoning in the child by Piaget, Jean 1896-

The Journal of general psychology.

Available for University of the Philippines - Diliman via EBSCOHost. Click here to access

Mental growth and decline a survey of developmental psychology by Hollingworth, Harry Levi 1880-

Keeping mentally fit a guide to everyday psychology by Jastrow, Joseph 1863-1944

The psychology of play activities by Lehman, Harvey C.

Psychology by experiment by Kline, Linus Ward 1866-

Psychology of the kindergarten-primary child by Pechstein, Louis Augustus 1888-

An introduction to psychology by Morgan, John Jacob Brooke 1888-

Outline of psychology by McDougall, William 1871-1938