You just answered by original question. I've heard of Citron Citron by Miller Harris, it is a generally well-esteemed citrus, though I never sampled it myself. You might like the Annick Goutal citrus fragrance line, Aqua di Parma Colonia, or my current favorite Bigarade Concentree.
You might have a look at the old archived blog of Luca Turin's, available at lucaturin.typepad.com, he is one of the biggest proponents of the idea that fragrances are gender neutral, and the masculine/feminine distinction is just a marketing ploy. I've worn some purported feminines myself (Chanel No 5 Eau Premiere, Guerlain Jicky parfum).
Many niche houses avoid the masculine/feminine divide. Of the three fragrance houses described above, the majority of their scents are officially listed as unisex.