Preheat your oven to 350°F (175°C) and grease a loaf pan.
In a bowl, cream together the softened butter and sugar until light and fluffy.
Add eggs one at a time, mixing well after each addition.
Stir in the lemon juice and lemon zest until well combined.
In another bowl, whisk together the flour, baking powder, baking soda, and salt.
Gradually add the dry ingredients to the wet mixture, alternating with milk.
Mix until just combined; do not overmix.
Pour the batter into the prepared loaf pan and smooth the top.
Bake for 50-60 minutes, or until a toothpick comes out clean.
Allow to cool in the pan for 10 minutes before transferring to a wire rack to cool completely.